Season 1 of Detective Extralarge premiered on 12 november 1991.

Season 2 of Detective Extralarge premiered on 3 marts 1992.

Jack Costello and his partner are faced with six new and exciting cases: at one stage our hero becomes involved in an international plot to kill a Chinese scientist in order to prevent him from revealing his new discoveries; another time he must find the murderer of his Indian friend; in another case he is forced to put a stop to a series of homicides carried out by a mysterious Ninja warrior.