4.3 Luck Be a Lady

Plot Summary
The season 4 main villain whose name isn't revealed observe Becky Sharp whose meta powers are causing her bad luck with her casino job. Wells arrive from his Earth to deliver a breakup cube to Wally who thought he was going to date Jessie. Wells struggle to explain what Jessie's message was after the breakup cube broke.

Later, Wells, Cisco, and Barry track the dark matter to a street which Barry realizes it was the wormhole to the Speed Force which he had opened. They realize Barry had unintentionally gave a "busload" of passengers meta powers. At S.T.A.R. Labs, Cisco and Wells argued in a blame game as Wells argued Cisco shouldn't free Barry without consulting him about his calculations.