- L.A. Confidential ( 1997 ) Crime, Drama, Mystery, Thriller
- L'Avventura ( 1960 ) Drama, Mystery
- L: Change the World ( 2008 ) Action, Fantasy, Mystery, Science Fiction, Thriller
- La belle captive ( 1983 ) Drama, Fantasy, Horror, Mystery
- La Señal ( 2007 ) Crime, Drama, Mystery
- La Tête d'un Homme ( 1933 ) Crime, Mystery, Thriller
- Labyrinth ( 2002 ) Adventure, Mystery, Thriller
- Labyrinth ( 2003 ) Crime, Drama, Mystery, Thriller
- Lady Blue Shanghai ( 2010 ) Drama, Mystery
- Lady in a Cage ( 1964 ) Drama, Mystery, Thriller
- Lady in Cement ( 1968 ) Comedy, Crime, Drama, Mystery
- Lady in the Lake ( 1947 ) Crime, Mystery, Thriller
- Lady in the Water ( 2006 ) Drama, Fantasy, Mystery, Thriller
- Lady in White ( 1962 ) Mystery, Thriller
- Lady of Burlesque ( 1943 ) Comedy, Mystery, Romance, Thriller
- Lady on a Train ( 1945 ) Crime, Mystery, Romance, Thriller
- Lantana ( 2001 ) Crime, Drama, Mystery, Thriller
- Lassiter ( 1984 ) Crime, Drama, Mystery, Thriller
- Last Embrace ( 1979 ) Mystery, Romance, Thriller
- Last of the Dogmen ( 1995 ) Adventure, Mystery, Thriller, Western
- Last Passenger ( 2013 ) Action, Mystery, Thriller
- Last Woman on Earth ( 1960 ) Drama, Mystery, Romance, Science Fiction
- Laura ( 1944 ) Drama, Mystery
- Le Corbeau ( 1943 ) Crime, Drama, Mystery, Thriller
- Le Pont du Nord ( 1982 ) Comedy, Fantasy, Mystery
- Leave ( 2011 ) Mystery, Thriller
- Lemming ( 2005 ) Drama, Mystery, Thriller
- Lemon Tree Passage ( 2014 ) Horror, Mystery, Thriller
- Les Bonnes Femmes ( 1960 ) Drama, Mystery, Romance
- Let Me In ( 2010 ) Drama, Horror, Mystery
- Let Me Make You a Martyr ( 2016 ) Action, Crime, Drama, Fantasy, Mystery, Thriller
- Let's Scare Jessica to Death ( 1971 ) Horror, Mystery, Thriller
- Letters From a Killer ( 1998 ) Drama, Mystery, Thriller
- Li'l Quinquin ( 2014 ) Comedy, Crime, Mystery
- Liebestraum ( 1991 ) Horror, Mystery, Romance, Thriller
- Lifepod ( 1993 ) Mystery, Science Fiction, Thriller
- Light Gradient ( 2009 ) Drama, Mystery, Romance
- Lights Out ( 2010 ) Drama, Mystery, Thriller
- Like Minds ( 2006 ) Crime, Horror, Mystery, Thriller
- Limitless ( 2011 ) Mystery, Science Fiction, Thriller
- Lips of Blood ( 1975 ) Foreign, Horror, Mystery, Romance
- Lizzie Borden Took An Ax ( 2014 ) Drama, Mystery, Thriller
- Loaded ( 1996 ) Drama, Mystery, Thriller
- Loft ( 2008 ) Drama, Mystery, Romance, Thriller
- London River ( 2009 ) Drama, Mystery
- London Road ( 2015 ) Adventure, Music, Mystery, Thriller
- London Spy ( 2015 ) Crime, Drama, Mystery, Romance, Thriller
- Lone Star ( 1996 ) Drama, Mystery, Romance
- Long Weekend ( 1978 ) Horror, Mystery, Thriller
- Loose Cannons ( 1990 ) Action, Comedy, Crime, Mystery, Thriller
- Lord of Illusions ( 1995 ) Horror, Mystery, Thriller
- Lost & Found ( 2016 ) Adventure, Family, Mystery
- Lost Highway ( 1997 ) Drama, Mystery, Thriller
- Lost Horizon ( 1937 ) Adventure, Drama, Fantasy, Mystery
- Lost in New York ( 1989 ) Fantasy, Horror, Mystery
- Love at Large ( 1990 ) Comedy, Mystery, Romance, Thriller
- Love Crime ( 2010 ) Crime, Mystery, Thriller
- Love Finds You In Sugarcreek ( 2014 ) Drama, Family, Mystery, TV Movie
- Love the Beast ( 2009 ) Action, Adventure, Documentary, Foreign, Mystery, Thriller
- Lovers of the Arctic Circle ( 1998 ) Drama, Mystery, Romance
- Lucifer Rising ( 1974 ) Fantasy, Mystery
- Lucky Number Slevin ( 2006 ) Crime, Drama, Mystery, Thriller
- Lulu on the Bridge ( 1998 ) Drama, Mystery, Romance, Thriller
- Lunopolis ( 2009 ) Mystery, Science Fiction, Thriller
- Lured ( 1947 ) Drama, Mystery, Thriller
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