We know the true substance of people when they are put in pressurized situations. The Rookie Season 7 is set to do that for both Officer Lucy Chen (Melissa O'Neil) and new rookie Seth Ridley (Patrick Keleher). Now a Training Officer for the LAPD Mid-Wilshire branch, Lucy is tasked with making an officer out of young Seth Ridley. However, recent events have highlighted that the rookie is not entirely one that Lucy can trust. But as can often be the case in life, the pendulum swings and there is a need to rely on not-so reliable individuals. Despite Seth's lies, which Lucy has effectively called out, next week's episode will see Lucy having to trust Seth with an undercover operation.