The Questi pazzi, pazzi italiani trilogy kicked off in 1965 with the first movie in the series Questi pazzi, pazzi italiani. In 1965 a second film was released staring Marisa Solinas, Bobby Solo, Roby Ferrante, Edoardo Vianello, and in 1965 the series was completed with 008: Operazione ritmo
The On the Buses trilogy kicked off in 1971 with the first movie in the series On the Buses. In 1971 a second film was released staring Reg Varney, Doris Hare, Michael Robbins, Anna Karen, and in 1972 the series was completed with Holiday on the Buses
The Nick Carter trilogy kicked off in 1939 with the first movie in the series Nick Carter, Master Detective. In 1940 a second film was released staring Walter Pidgeon, Donald Meek, Joseph Schildkraut, Florence Rice, and in 1940 the series was completed with Sky Murder
The Left Behind trilogy kicked off in 2000 with the first movie in the series Left Behind. In 2002 a second film was released staring Bob Carlisle, Russ Lee, Bill Corcoran, Kirk Cameron, and in 2005 the series was completed with Left Behind: World at War
The Kate Kirby trilogy kicked off in 1913 with the first movie in the series Chelsea 7750. In 1913 a second film was released staring Laura Sawyer, House Peters, Edward Earle, and in 1913 the series was completed with The Port of Doom
The Indecent Behavior trilogy kicked off in 1993 with the first movie in the series Indecent Behavior. In 1994 a second film was released staring Shannon Tweed, James Brolin, Chad McQueen, Cynthia Steele, and in 1995 the series was completed with Indecent Behavior III
The Harihar Nagar trilogy kicked off in 1990 with the first movie in the series In Harihar Nagar. In 2009 a second film was released staring Mukesh, Siddique, Jagadish, Asokan, and in 2010 the series was completed with In Ghost House Inn
The Get Married trilogy kicked off in 2007 with the first movie in the series Get Married. In 2009 a second film was released staring Nirina Zubir, Nino Fernandez, Aming Sugandhi, Ringgo Agus Rahman, and in 2011 the series was completed with Get Married 3
The Erotic Ghost Story trilogy kicked off in 1987 with the first movie in the series Erotic Ghost Story. In 1993 a second film was released staring Amy Yip, Chia Ling Ha, So Man, Hitomi Kudô, and in 1994 the series was completed with Erotic Ghost Story III
The Captain Nemo trilogy kicked off in 1954 with the first movie in the series 20,000 Leagues Under the Sea. In 1961 a second film was released staring Michael Craig, Joan Greenwood, Michael Callan, Gary Merrill, and in 1969 the series was completed with Captain Nemo and the Underwater City
