THE ROOKIE - “New Blood” – When Professor Fiona Ryan’s car window is smashed following a series of mysterious notes, Officer Nolan volunteers to guard her house overnight. Meanwhile, Lucy notices that Tim is being much nicer to his new boot than he was with her and she does not like it on “The Rookie,” SUNDAY, APRIL 18 (10:00-11:00 p.m. EDT), on ABC. (ABC/Gilles Mingasson)GREG GRUNBERG, NATHAN FILLION

THE ROOKIE - "Now and Then" - Lucy returns to duty after her abduction and Harper steps in to help her through her first day back on patrol. Meanwhile, Nolan takes his son's fiancé, Abigail, on a ride along after showing interest in becoming a police officer, on an all-new episode of "The Rookie," airing SUNDAY, MAR. 1 (10:00-11:00 p.m. EST), on ABC. (ABC/Richard Cartwright) THE ROOKIE