Gumapang ka sa lusak is a 1990 Tagalog-language Action Crime movie written by Ricardo Lee and directed by Lino Brocka and produced by Eric M. Cuatico, Boy C. De Guia and Vic Del Rosario Jr. under the banner of Viva Films. A teenage boy befriends a starlet who is having an affair with an ambitious mayor. As the elections are coming up.. Gumapang ka sa lusak stars Dina Bonnevie in the lead role along with an ensemble cast including Christopher De Leon, Eddie Garcia, Charo Santos, Charo Santos-concio, Bembol Roco and Allan Paule. The music was composed by Nonong Buencamino. Cinematography was done by Pedro Manding Jr. and editing by George Jarlego. The movie has a running time of 120 minutes. It was released on 20th March 1990. Distribution rights for the movie were acquired by Viva Films.