S2·E5 The Eve

A Link so monumentally evil that his name has been lost to history reappears on Halloween, the one night of the year when Links can roam with impunity. The confrontation between the Link and Nick is made all the more personal - and lethal - as it is the villain responsible for the death of Nick's former partner. The mysterious Link is bringing the corpses of serial killers back to life so they can carry out his plan to assume leadership of all Links.