Mr. Lockjaw is the story of Miles Brimley, a struggling children's entertainer who is dragged into the underworld of criminal interrogation and torture by his deranged dummy, Mr. Lockjaw. Finding his hole dug deeper and deeper, Miles has no choice but to give in to Mr. Lockjaw's increasingly dangerous desires. Miles and Lockjaw's situation is further complicated by the crumbling empire of their once powerful employer, Hubaldus Hercolani; his number one in command, Leonard Stanley; and a blackmailed police officer, Bill Preslin. If that weren't enough to contend with, Detective Schafley, a by the book gumshoe, is pulled into a murder case with Miles as the prime suspect... or should that be Mr. Lockjaw?