On this episode of The Blacklist…

Red is poisoned.

He believes one of his 11 associates betrayed him.

Red tries to put the pieces back together and learns Marvin Gerard was leaving the country.

Red believes it was Marvin that went after him, but he learns Dembe poisoned him.

The Apothecary was behind the poison, as well as a case involving an affair. He also forced his wife to have a baby with him.