 Held hostage by Matt at a local police station, Scott, Stiles, their parents, and Derek are able to escape, although Scott transforms for the first time in front of his mother, Melissa McCall (Melissa Ponzio), leaving her horrified.Gerard drowns Matt and becomes the Kanima/Jackson's new master.Derek learns from Peter that the Kanima's weakness is the love interest of its human form, in this case Lydia.