Actors continue to come aboard the DC Universe series Lanterns, with John Stewart's father the latest character to be cast.

HBO's Lanterns latest cast additional teases how the DCU series will explore the past of John Stewart before he becomes Green Lantern.

Carey Mulligan and Tom Basden in The Ballad of Wallis Island (Image credit: Alistair Heap/Focus Features) Release date: March 28 Cast: Tom Basden, Tim Key, Carey Mulligan Director: James Griffiths ...