Doctor Who Month continues as Tread Perilously materializes for the two-part Doctor Who tale "The Stolen Earth" & "Journey's End."

When Donna receives a message from Rose about a coming darkness, she and The Doctor land on Earth just in time to see it snatched away to somewhere else in space and time. While they try to find its location, The Doctor's friends still on the planet gather to face an invasion of Daleks. Will they prove Dalek creator Davros's suspicions about The Doctor? Or will the mad scientist once again end up a victim of Time? Also, will The Doctor and Rose reunite and will Donna ever be the same after this adventure?

Erik and Justin prepare for a Russell T. Davies story by comparing it to Steven Moffat's writing tendencies. Billie Piper proves to be a welcome return after years of Rose being one of the less likable companions. A discussion about the episode's momentum and J.J. Abrams breaks out. The Supreme Dalek earns a sketch all his own. Erik declares the appropriate social media platforms for Davies and Moffat and points out the slight difference in the 10.5 Doctor. Justin continues to champion Douglas Adams as a top-tier Doctor Who writer. The pair try to determine if Donna is the best of the modern Who companions and "the Guy Spectrum" is defined.

Tread Perilously's annual Doctor Who months returns with the 20th Anniversary special, "The Five Doctors."

When the Doctor discovers his previous selves are being plucked from time, he sets the TARDIS for Gallifrey. Meanwhile, on the Time Lord homeworld, The First, Second, and Third Doctors are reunited with friends and companions to brave the Death Zone -- a region of the planet host to deadly games and the Tomb of Rassilon, the greatest figure in Time Lord history. Will they discover he was a mad tyrant or will his wisdom aid the Doctors in defeating their true adversary? 

Episode writer Terrance Dicks gets compared to Robert Holmes. His references to Doctor Who history throughout the story also get examined. Justin disagrees with pairing the Second Doctor and the Brigadier. He also doubts the show was a phenomenon in 1983. The pair discuss the unending 80s revival and Tegan Jovanka's new look for the special. The unfortunate role for Sarah Jane Smith in the episode, Susan's almost-unacknowledged place in Doctor Who history, and the Welsh countryside also earn some chatter. Erik plants the idea of Tom Hiddleston as a younger First Doctor in Justin's mind. Actor Richard Hurndall, who plays the First Doctor in the special, gets a review all his own. Justin evaluates Turlough and a proposed new "Five Doctors" quickly becomes "The Six-and-a-Half Doctors."

Tread Perilously's crossover month concludes where superheroes and sitcoms collide -- an episode of I Love Lucy called "Lucy and Superman."

Little Ricky and his best friend, Stevie, will soon celebrate their birthdays, but Lucy and Stevie's mother enter an arms race to see who can throw the better party. Stevie's mother hires a clown and magician. Strapped for ideas, Lucy gets Ricky to reach out to Superman, a TV star they met while visiting Los Angeles. But when the Man of Steel initially turns down the offer to appear, Lucy takes it upon herself to become the Last Son of Krypton. Will her hare-brained scheme work or will the Man of Tomorrow come to her rescue?

Erik and Justin accept I Love Lucy's premise that Superman is a real celebrity who is both super-powered and a TV star. They also "'splain" the premise of the original three-camera sitcom. Both Lucille Ball and Desi Arnaz are praised for their pioneering efforts. Their children, less so. Erik reveals the meaning of I Love Lucy to him, which differs greatly for Justin. Nikita Khrushchev's plan to create a Soviet Superman is revealed. Justin once again stumps for Hollywoodland. Erik tries to remember all the men who played Superman and Chris Knight continues to evolve into the devil.

Tread Perilously's Crossover month finally delivers on the long-promised look at the Bones and Sleepy Hollow crossover: "The Resurrection in the Remains" and "Dead Men Tell No Tales."

When the Bones team uncovers a headless corpse from the 18th Century next to the fresh corpse they were called to investigate, Abby Mills and Ichabod Crane make the drive from Sleepy Hollow to "assist" Brennan and Booth while also claiming rights to the dry bones. And once they arrange for transport, Brennan and Booth must help them uncover a 250-year-old mystery in order to stop Draugir from killing everyone in town.

Erik finally experiences Sleepy Hollow while Justin recalls why he even suggested this crossover in the first place all those years ago. The pair get lost in the weeds discussing "chummy" character crossovers. Justin considers why The Simpsons lost ground with the younger generations. Erik declares Ebony Dark'ness Dementia Raven Way to be one of the great literary characters. The clash of tones between the two shows sets the episodes apart. Americana proves to be a great source of comedy, as does Sleepy Hollow's Shannyn Sossamon. Justin offers one key pet peeve about Sleepy Hollow and the motion picture Flatliners becomes surprisingly important.

Tread Perilously's crossover month proves as a good excuse to examine episode seven of The Brady Bunch Variety Hour -- a crossover in its own right!

In the narrative sketches, the school-aged Brady kids meet the children from What's Happening!! when they are moved to the Bradys' studio classroom for the day. The actors always present as themselves, but the show tries very hard to make them behave as their characters. Nevertheless, the quick rapport between the two groups leads Peter to suggest the What's Happening!! kids be guests on the Bradys' variety program. Will Mike and Carol be as pleased? Also, will they be able to articulate why they don't want young actors who play kids from Watts on the show?

Paul Pakler from Paul and Corey Cross the Streams joins Erik and Justin for a look at 1970s variety television. Erik, being on assignment, must use a lower-quality microphone. Paul blames Richard Nixon (haroo!) for the enduring popularity of the Brady concept. Justin tries to find some modern personalities who could host a variety show. Erik blames Ken Ober for Susan Olsen's downward spiral. The horror of Alice's musical number is defined in detail and Rick Dees is almost ignored. Danielle Spencer proves to be the episode MVP and Fake Jan makes a small impression.

Tread Perilously's crossover month continues as Baby and the Mystery Machine collide in the Supernatural episode called "ScoobyNatural."

When Dean is awarded a widescreen TV for defeating a haunted dinosaur toy, he and Sam are transported into the animated reality of Scooby Doo, Where Are You! -- episode 16, "A Night of Fright Is No Delight" to be exact. While Sam frets about being a drawn character, Dean turns into a total fan even as he attempts to tempt Daphne away from Fred. But the merriment may get cancelled when the lighthearted events of the plot turn to real murder. Will a haunted television turn this crossover into something lethal?

Justin admits to never being a Muppets guy, but he shares Dean's affection for Scooby Doo. A discussion of children's cartoons and the Looney Tunes breaks out. Erik envisions voice actor Frank Welker's mobile recording studio. Justin argues for Velma Dinkley as a Bisexual Icon. Justin waxes about the musical chases in the original series. The Scooby Doo and Supernatural formats are examined. The tendency toward real estate developers as the villain is explained. Matthew Lillard once gets all the praise, as does Grey Griffin. Velma and Sam prove to be a fruitful pairing and Erik tries to figure out why the episode's animation leaves him cold.

Tread Perilously finally delivers the long-promised month of crossovers, starting with the Magnum P.I./Murder, She Wrote event -- "Novel Connection" & "Magnum on Ice."

When Robin Masters' latest house guests appear to be marked for assassination, Higgins does everything in his power to dissuade Magnum from digging into the case. As it happens, Masters' agent has brought in help of her own: Jessica Fletcher. And while Magnum keeps saying he doesn't want the case and Jessica maintains she is no investigator, the pair end up looking into the problem once Magnum stands accused of murdering a local he insists is the contract killer hired to kill one of the guests.

Erik and Justin plot a "Crisis of Infinite Podcasts." They also take another look at both Magnum and Murder, She Wrote as different types of detective shows. Higgins' absolute fascination with Jessica proves to be the crossover's greatest asset -- and that's considering the presence of Jessica Walter in the guest cast! The strange ending of the Magnum episode leads Erik to suspect a "safety" conclusion was filmed for syndication. The mystery of Robin Masters is once again explored. Wolverine proves to be a bad man. Tom Selleck's leading man quality is appraised and Ronny Cox leads the "untrustworthy screen presence" chart.

Tread Perilously's first Grab Bag month of the year concludes with a look at the infamous Mrs. Columbo via the episode called "A Riddle for Puppets."

When ventriloquist and puppet maker Victor March is murdered, police are baffled by the killing. They believe it's a robbery, but Kate Columbo suspects something else when she meets March's former protege, Noel Abbott. A ventriloquist of some renown, he has seemingly lost control of his dummy, who both refuses to do their routines and openly admits he hates Abbott. But this is all just Abbott externalizing his own issues, right? Will Kate be able to wrangle a confession for Abbott or will his dummy squeal?

Erik's Kate Mulgrew impression gets a workout. The difference between Kate Columbo and Mrs. Columbo is explored. Justin delivers more understanding about Night Court. Both outline a 1950s version of The Terminator. Another reason why Mulgrew was miscast as Columbo's wife is discovered. Ventriloquism turns out to be a virulent disease. Pinhead returns to reveal more of Hell's hierarchy and why improv is so important. A special warning is issued about the Black Forest. A portal of weeds opens when the pair try to explain "Clown can't talk" and Crackers the Demon Puppet makes his debut.