The Investigator is an Alligator who Investigates crime, alongside various faithful sidekicks. With Bobbycat, they investigate various gruesome murders, interrogate suspects, and collect clues, until the time comes to accuse the murderer.

In Investigator and the Unconventional Weapon, Investigator and the Vanilla Chinchilla look into the murder of McGuffin the Puffin, found floating face down in the bathtub with a bloodied toilet tank lid on the floor.