"In Memoriam" is the side quest in Borderlands 2
Sidequest (Optional Mission)
How to start
Speak to Lilith
TURN IN: Lilith
Money and XP and a Head
Lilith is alive, but Hyperion sure as hell doesn't need to know that.
With the peeping tom dead and his footage destroyed, Hyperion remains clueless about Lilith's location.