Washington, Feb. 11 -- Apple's upcoming international espionage drama 'Safe Houses' is lining up a formidable cast, with Ana de Armas and Jennifer Connelly in negotiations to headline the series.

The eight-episode thriller hails from Homeland creator Gideon Raff, who will serve as executive producer and showrunner, Deadline reported.

Based on Dan Fesperman's 2018 novel of the same name, 'Safe Houses' is set in the aftermath of the killing of a high-ranking CIA officer in Madrid. The story follows Sofia Jimenez, a fugitive agent accused of murder, and Ambassador Elizabeth Winthrop, the officer's widow, as they separately investigate the crime from opposing sides. As their inquiries unfold, both women uncover a far-reaching conspiracy wit...