Having been possessed by Mary, Eve is on high alert. Meanwhile, Abe has to deal with the arrival of his grandma.
Will struggles to control his nanobots and his feelings for Lily.
Cain and Michael Hoffman go to the Clarke house. Will Eve be able to evade discovery?
Rebecca and Nick take Will to Calimov to run tests on him.
Eve's attempts to help her sister KT pass for human are derailed by Katherine.