In the series finale, a museum worker's death triggers an investigation that hinges on a missing dagger that was used to kill Julius Caesar—and Adam. Meanwhile, Henry worries that Jo will discover his secret as he prepares for an ultimate showdown with Adam.
A severed human foot in a ballet shoe is found in a dumpster at a theater and kicks off a search for a killer in the ultra-competitive world of ballet. Meanwhile, Jo balks at the pace of her relationship with Isaac, though Henry encourages her to be optimistic; Lucas helps Abe find out where Abigail went after leaving Henry; and Henry ponders Adam's theory about the gun that killed him the first time.
A woman's mummified body is found in the wall at a punk-rock club—where Jo and Isaac are on a date—where she may have died of a drug overdose in the 1980s, though her then-boyfriend, rocker Eddie Warsaw, was convicted of killing her.
A treasure hunter is murdered, which leads Henry to discover he was killed on the missing ship. Meanwhile, Jo and a handsome entrepreneur share a mutual attraction; and Adam has an idea to solve his and Henry's curse.