THE AFTER WIFE by Cass Hunter

Rachel and Aidan have it all – she’s a brilliant, high-flying scientist, he’s her loving supportive husband and they share a daughter. But Aidan’s world comes crashing down when Rachel dies. There’s one thing she’s left behind to help ease his pain, though – and it’s called irachel. The sci-fi tech plot is reminiscent of Netflix series Black Mirror. OUT NOW (Hachette, $29.99)