Daniel Boileau

A patient at a mental hospital undergoes an impromptu surgery that unexpectedly leaves his brain exposed; Olivia sees a familiar face; William Bell resurfaces.

Oliver must stop an Arrow-obsessed serial killer, Carrie Cutter (guest star Amy Gumenick), who is convinced that The Arrow is her one true love and will stop at nothing to get his attention. Unfortunately, her way of getting his attention is to kill people. Meanwhile, Ray asks Felicity to be his date for a work dinner with important clients. Thea auditions new DJs for Verdant and meets Chase (guest star Austin Butler), a brash DJ with whom she immediately clashes.

The Toyman returns and takes Oliver hostage! Tess Mercer (series star CASSIDY FREEMAN) forces Oliver to come to a Queen Industries gala to put the Board at ease, but things go awry when the Toyman (guest star CHRIS GAUTHEIR) shows up with a bomb and a plan to take revenge on Oliver. The Toyman tells Oliver he must confess to murdering Lex or he will blow the place up. Meanwhile, as part of his training, Jor-El gives Clark the ability to hear other people's thoughts.