The Scientist

A seemingly impossible robbery at Queen Consolidated’s Applied Sciences Division brings Central City police scientist Barry Allen to town. Citing a similar case back home, Barry offers to help Oliver and team with the investigation. Oliver senses there is more to Barry than meets the eye, but he’s distracted by the similarities between this current case and something that happened on the island. Meanwhile, Felicity takes a liking to Barry, which doesn’t go unnoticed by Oliver. Sin asks Roy for help when a friend of hers goes missing. Roy is surprised when Thea not only encourages him to help, but joins the search. Unfortunately, Sin’s friend is connected to Brother Blood, and their search ultimately gets one of them seriously injured.

The Decision Tree

Alicia is shocked to learn that a former client bequeathed her millions, but Lockhart/Gardner quickly contests the will on behalf of the deceased’s wife. Meanwhile, Diane asks Kalinda to look into Damian’s background. Also, Eli and Marilyn are concerned about Peter being seen with Alicia’s more disreputable clients at the Florrick/Agos holiday party.