The Courtship of Wyatt's Father

A Darklighter named Damien sends both Leo and Piper into a trap on the ghostly plane while wounding Leo with his darklighter crossbow where they are without powers, leaving Phoebe and Paige to fear that they are dead, but for Phobe being certain she would sense Piper's death. Meanwhile, he hunts them there while back at the manor Chris is obsessing over the fact that he's just plain out of time, for he must be conceived by Piper and Leo sometime in the next day or so before he disappears forever having never been conceived so half of the episode's crises solutions and tension are focused on the two auntie's (now belated) attempts to play matchmaker