Needing to shut down the weapons smuggling ring, Nick went undercover within the gang operation. Then word gets out that the leader of the gang knows that he is a cop and Michelle calls Nick out to pull him from the operation.
Nick defies Michelle and continues the operation, and he is promptly shot by the gang. When Toby visits Nick in a coma at the hospital and reads his thoughts, he's interrupted by McCluskey, who demands an explanation for Toby's presence. Having "seen" Nick's assault, Toby has no choice but to reveal his telepathic abilities to McCluskey.