Ben Seeks Help From Xander on 'Siren' Tonight

Ben tries to teach more about humans to Levi in this still from Siren.

In “Primal Instincts”, Ryn (Eline Powell) continues to try to teach the other mermaids to be more human in order to better assimilate, but some are starting to resist her, causing Ryn to wonder if she herself is becoming too human.

Meanwhile, Maddie (Fola Evans-Akingbola) finds herself in a dangerous situation trying to help her mom; and Ben (Alex Roe) and Xander (Ian Verdun) reconcile in order to work together to get the mermaid pack back into the water.

Siren airs TONIGHT, Thursday, February 21st @ 8PM ET/PT on Freeform.