: During the investigation, Lightman is forced to reveal some of his own personal secrets to gain the trust needed to identify the killer.
(Kelli Williams): Lightman's partner, who provides psychological insight. [S1E4] Love Always
: Lightman and his team work alongside the Secret Service to find the shooter. Lightman uses his expertise in micro-expressions to peel back layers of family lies, eventually discovering that the threat was a cover for a more personal motive. : During the investigation, Lightman is forced to