A Fallen Angel

Life for the Charmed ones have had their rocky moments...and their smother ones. Demonic activity has been at a minimum, shy for an attack that brought forth a funeral. When a clan of demons attacked, Coop dove in front of Henry to save him from the blast...this act actually cost Coop his life, and Phoebe her husband. They had a funeral for Coop, since he had tied to the mortal world. As they were having coffee in the manor, a sound coming from the living room, a sound that resembled an explosion, got everyone's attention.

What could the cause be?

Couples
Paige & Henry
Phoebe & TBD
Piper & Leo