Lieutenant Columbo arrives to Bikini Bottom, with his loyal sea-dog, solving a murder case with Horatio and SpongeBob and fighting with a dangerous Anglerfish cartel queen.

Phineas Whitmer is busy, so he sends a reliable substitute to Dartmoor in Lieutenant Columbo. Cue Agent 47's most frustrating mission yet. Starring Columbo as the one NPC who is always in the worst spot at the worst time.

Detective Columbo pays a visit to Kojak and his team to help them solve a difficult case.

Two martial artists settle an old score, and the loser must give up his life. Thus ends a 20 year promise, or so it would seem, if not for Lt. Columbo showing up in a foreign land to uncover the truth. Ranma and Akane guest star.

Muppet Theater experiences an unfortunate accident during their latest performance. But Lt. Columbo is convinced this was no accident. Jim Carrey, Willem Dafoe, and The Muppets guest star.

An android is driven to kill the one closest to her. A secret she must hide from everyone, especially this Columbo android who keeps asking difficult questions. 2B and 9S guest star.

The owner of a famous carbonated drink empire is taken out mysteriously by a spooky vampire. Columbo recruits some helpful teens to help him catch this bloodthirsty killer. Scooby Doo and the Mystery Inc gang guest star.

A real estate tycoon does whatever it takes to keep his business running, no matter the cost. Columbo has to figure out where the old tanuki went wrong. Tom Nook and Isabelle guest star.

Gabriel Agrest faces his strongest opponent yet. A small time American detective that goes by the name Columbo.

Jenkins vs Columbo. That’s it, that’s the fic. For the “Crossover” prompt of the 2023 Librarians Prompt Month.

When Columbo investigates the murder of Lady Elizabeth, he encounters Edmund Blackadder. Will he catch the slithering scoundrel? Will Blackadder escape the relentless Detective? And what is to become of Baldrick?

Summary: Even a supervillain, who's skipped worlds and retired to a universe that your enemies can't reach, should be careful not to underestimate people. Especially policeman. (Written for Crossworks 2022 Crossover Exchange)

At a hotel bar in San Francisco, Chief Robert Ironside has the chance to catch up with an old friend: Two legendary detectives, one shared purpose. (Written for the Into A Bar ficathon 2022)

STORIA PORTATA AD UN CONCORSO LETTERARIO. Creckett rimane sospeso dalla disciplinare per una presunta uccisione di un ragazzo durante un inseguimento. L a sua squadra lo ritiene non colpevole naturalmente, ma anche il Tenente Colombo in vacanza decide lo stesso di aiutare il detective anche non essendo sua giurisdizione.

Just a crazy thought about Columbo actually being Loki, exiled as a mortal. Takes place in the end of "Blueprints for Murder".

In a world where Gotham's favourite billionaire playboy and traumatized genius (Columbo) struggles to find justice for the plagiarism of his game by a swedish bastard and also the death of his parents, he becomes the mysterious vigilante Hatsune Miku to avoid getting his poop turned into a health food.

Grace gets to the orphanage before Annie returns, choosing Molly. 10-year-old Frank Columbo is along for the ride & interacts in events of the musical - which has scenes rearranged a bit )Molly's there locket info) - as the boy Columbo tries to help Annie & then matches wits with Miss Hannigan to uncover mystery more suited for his age, the existence of the illegal sweatshop.

Terminally distraught from catching his new wife in an act of infidelity, Roger Rabbit gets dead. The case is the most stone cold whodunit to ever feature an entire room sprayed with semen. Only LA's greatest glass-eyed gumshoe can bumble his way into the discovery of a lifetime.

It's 2004 and L.A. police forces would work way smoother if they still had Lieutenant Columbo at their disposal, Homicide district. No known lost case. So why deny them?

He's LAPD's most unconventional homicide detective. He's always got just one more question. And now he needs Five-O's help to find the answers. A Five-O - Columbo crossover.

A brutal murder at the Los Angeles Zoo appears to be just one small link in a larger chain of events. Hoping to speed along his newest homicide investigation, the legendary Lt. Columbo requests assistance from Adrian Monk.

A chaotic call to a fractious family picnic leads to the solution to multiple mysteries. There is an appearance of another 1970's TV character, but not enough to be a true crossover - it's mostly Emergency!.