The murder case comes to a conclusion as Detectives Carver and Miller finally apprehend Danny's killer.
Detective Miller's family crisis might lead to a new suspect; Detective Carver deals with an unexpected visitor.
As the search for the killer continues, the Solanos try to acclimate to life without Danny; Susan Wright is brought in for questioning.
Felicity and Diggle head to Lian Yu Island to look for Oliver. Isabel Rochev plans a hostile takeover of Queen Consolidated.
When her patient is questioned about the sudden deaths of her parents, Hailey's previous job comes in handy to prove her innocence.