Lindsay Lohan has signed on to join Keira Knightley in the British drama, The Best Time of Our Lives for Sarah Radclyffe Productions.

Keira's mother, playwright Sharman Macdonald wrote the script; John Maybury is in talks to direct the film based on the true story of the relationships among Welsh poet Dylan Thomas, his wife Caitlin (Lohan), his childhood friend Vera Phillips (Knightley) and her eventual husband, William Killick. Variety adds it centers on the curious incident in which Phillips and Killick opened fire on the Thomas home with a machine gun and a hand grenade.

The Best Time of Our Lives is scheduled to begin shooting in April.