Big Brother is a 2020 Indian Malayalam-language action thriller film written, directed, and co-produced by Siddique (in his last film before his death). It was jointly produced by S Talkies, Shaman International, and Vaishaka Cinema, in association with Carnival Movie Network. The film stars Mohanlal in the title role, along with an ensemble cast of Arbaaz Khan, Anoop Menon, Vishnu Unnikrishnan, Sarjano Khalid, Honey Rose, Mirnaa Menon, Chetan Hansraj, Irshad, Gaadha, Siddique, Dinesh Panicker, Tini Tom, Devan and John Vijay in supporting cast. Big Brother marks Arbaaz Khan's debut appearance in Malayalam cinema. The songs and background score for the film was composed by Deepak Dev.

The film began principal photography in July 2019 and was completed in December. It was shot extensively in Bangalore, and the remaining in Mysore, Mangalore, Ernakulam, and Coimbatore. It opened to mixed reviews from critics and was one of the biggest box-office bomb in malayalam film industry.