 Massive Dynamic executive Mark Young ( Ptolemy Slocum ) delivers a presentation at the company ’ s Manhattan office . When he is done and the other attendees have left , he sees an unusual butterfly . Upon picking it up , he experiences a cut on his hand and is then attacked by a swarm . Mark jumps out of a window , to his death . Olivia Dunham ( Anna Torv ) , despite preparing to go out to dinner with her sister , instead agrees to Phillip <unk> ' ( Lance <unk> ) demand that she join the Fringe team 's investigation at the scene . While examining the body , Dr. Walter Bishop ( John Noble ) sees <unk> on Young ’ s skin and notes a lack of corresponding tears on his shirt . At the scene , Olivia has a brief vision of her deceased lover John Scott ( Mark Valley ) watching them , which troubles her . 
