Showtime has disclosed a release date and first trailer for “Guerrilla,” a six-part limited event series from creator John Ridley (“American Crime,” “12 Years a Slave”), with Idris Elba’s Green Door Pictures executive producing.

The series, about U.K.’s black radicals in the 1970s, will premiere on Sunday, April 16 at 9 PM ET/PT.

Elba also co-stars in “Guerrilla”, which tells the story of Marcus (Babou Ceesay) and Jas (Frieda Pinto) whose relationship and values are tested when they liberate a political prisoner and form a radical underground cell in 1970s London. Their ultimate target becomes the Black Power Desk, a true-life, secretive counter-intelligence unit within a Special Branch dedicated to crushing all forms of black activism.

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Oscar winner Ridley wrote most of the series (British writer Misan Sagay penned episode five) and Ridley also directs half of the episodes with British helmer Sam Miller.