When a therapist is murdered, Lucifer and Chloe enlist the help of Dr. Linda to look into possible suspects. Meanwhile, Malcolm confronts Chloe about the night he was shot, and…

When DeVoe assaults an A.R.G.U.S. facility to complete his Enlightenment Machine, Barry realizes the only way he can stop him is if he allows Cisco and Caitlin to accompany him…