The Heintje trilogy kicked off in 1969 with the first movie in the series Heintje – Ein Herz geht auf Reisen. In 1970 a second film was released staring Heintje Simons, Heinz Reincke, Gerlinde Locker, Paul Dahlke, and in 1970 the series was completed with Heintje – Mein bester Freund
The The Hangover trilogy kicked off in 2009 with the first movie in the series The Hangover. In 2011 a second film was released staring Leonard Maltin, and in 2013 the series was completed with The Hangover Part III
The Robin Hood (Columbia Pictures) trilogy kicked off in 1946 with the first movie in the series The Bandit of Sherwood Forest. In 1948 a second film was released staring Jon Hall, Patricia Morison, Adele Jergens, Alan Mowbray, and in 1950 the series was completed with Rogues of Sherwood Forest
The Legally Blonde trilogy kicked off in 2001 with the first movie in the series Legally Blonde. In 2003 a second film was released staring Reese Witherspoon, Sally Field, Regina King, Jennifer Coolidge, and in 2009 the series was completed with Legally Blondes
The Trilogy of Imagination trilogy kicked off in 1981 with the first movie in the series Time Bandits. In 1985 a second film was released staring Jonathan Pryce, Robert De Niro, Katherine Helmond, Ian Holm, and in 1988 the series was completed with The Adventures of Baron Munchausen
The The Three Musketeers trilogy kicked off in 1973 with the first movie in the series The Three Musketeers. In 1974 a second film was released staring Aldo Fabrizi, Nino Taranto, Erminio Macario, Carlo Croccolo, and in 1989 the series was completed with The Return of the Musketeers
The Trilogy of Henryk Sienkiewicz trilogy kicked off in 1999 with the first movie in the series With Fire and Sword. In 1974 a second film was released staring Daniel Olbrychski, Malgorzata Braunek, Tadeusz Lomnicki, Kazimierz Wichniarz, and in 1969 the series was completed with Colonel Wolodyjowski
The Beverly Hills Cop trilogy kicked off in 1984 with the first movie in the series Beverly Hills Cop. In 1987 a second film was released staring Eddie Murphy, Judge Reinhold, Jürgen Prochnow, Ronny Cox, and in 1994 the series was completed with Beverly Hills Cop III
The Stuart Little trilogy kicked off in 1999 with the first movie in the series Stuart Little. In 2002 a second film was released staring Michael J. Fox, Geena Davis, Hugh Laurie, Jonathan Lipnicki, and in 2005 the series was completed with Stuart Little 3: Call of the Wild
The All Dogs Go To Heaven trilogy kicked off in 1989 with the first movie in the series All Dogs Go To Heaven. In 1996 a second film was released staring Ernest Borgnine, Bebe Neuwirth, Charlie Sheen, Hamilton Camp, and in 1998 the series was completed with An All Dogs Christmas Carol
The Teenage Mutant Ninja Turtles (live action films) trilogy kicked off in 1990 with the first movie in the series Teenage Mutant Ninja Turtles. In 1991 a second film was released staring Paige Turco, David Warner, Michelan Sisti, Leif Tilden, and in 1993 the series was completed with Teenage Mutant Ninja Turtles III
