Last Girl Ghosted by Lisa Unger The world of online dating is even scarier than usual in Lisa Unger's intense Last Girl Ghosted. After forming an instant connection with a man she matches with on a dating app, a woman is astonished when he completely ghosts her. But that's only the beginning — she soon realises he's done this before, and the women in question have all disappeared. Out Oct. 5 Image Source: Amazon.com