AJ sets out to find a cure this week when the rest of the crew goes blind.

Clark scours old tapes trying to find a reason for what is happening to them before he goes blind.

After something attacks Clark, Lena, AJ and Kurt take the motorboat to find the Sentigo tree, that houses a bulb under it that will counteract whatever is causing their blindness.

The Morcegos climb aboard the boat.

Clark admits to Lincoln there was no affair, although he wanted one.

It was left to AJ to climb under the tree into a cave to find the bulb.

The Morcego helped the crew.