Jamie and Joe search for an undocumented teenage girl who is the victim of sex trafficking; a woman in witness protection is murdered; Frank calls out the DA's office for instituting a new rule that classifies armed robbery as a misdemeanour.
After Pride travels to a deep-sea oil rig for a murder investigation, the team uncovers a gas leak that's on the verge of causing a catastrophic explosion; Sebastian starts his NCIS special agent training.
Owners of an underground arena enslave Angel and pit him against powerful demons in a fight to the death.
Mac and the gang team up with a master thief to catch an underworld criminal who hired her to steal a dirty bomb.
Mary receives much needed assistance from a former foe to keep Salem under the management of the witches.