When an infant goes missing, the SVU finds themselves taking sides in a family’s right-to-die court case. Meanwhile, Barba’s interference in the case puts the entire DA’s office in jeopardy.

O’Neill becomes the unwilling receptacle for a library of alien knowledge.

Mulder reluctantly accepts a new partner, Agent Alex Krycek, and they investigate the deaths of several Green Beret soldiers who participated in a sleep deprivation experiment during the Vietnam war.