Fringe (2008)

S1E8 The Equation

Walter suspects that the kidnapping of a talented young musician is connected to his former roommate from St. Claire's Hospital. After he takes the child, he experiences a series of disorienting flashes. Olivia insists that Walter should go back to the psychiatric facility, much to Peter's distress. However, Walter's resolve to assist leads to unsettling consequences that unfold as the story progresses.