After teenage twin sisters go missing, Detective Sgt. Lisa Armstrong struggles with her own link to the case.
With emotions high after the discovery of Dylan's body, Lisa investigates a new suspect.
With Sean released, Lisa's suspicions turn to another member of the Meredith family.
After Nick is hospitalized with serious injuries, Lisa furiously seeks out Sean; Med feels increasingly sidelined.
As Lisa tries to get through to Holly, Med grows suspicious that she's hiding something.
Despite her suspension, Lisa remains determined to uncover the truth about Dylan.
Marsha Thomason
DS Jenn Townsend
Erin Shanagher
Karen Hobson
Andrew Dowbiggin
James Clarke
Thomas Law
Eddie Martin
Jonas Armstrong
Sean Meredith
