"I don't know, but I've heard that fucking bug story before. Last time they was under your skin, remember?" - Tricia (Courtney Bell)
Even being forgiving of its humble kickstarter $70k roots and young cast & crew 'Absentia' was ultimately an hollow unrewarding experience for me. It initially offered a solid early build-up of psychological suspense (like a lo-fi '4400' clone) around a woman having visions of her missing for 7 years husband. Then it gets messy when he returns for a brief time then disappears again. The film then nose dives into mystery for mysteries sake, as each of the three central characters wife, her sister and a pair of detectives have different theories on what happened. Sadly the film ends unresolved taking its mystery and most of its protagonists to the dead letter office in the sky.
'Absentia's' vague climax could either be viewed as clever for not bowing to either characters view, or more cynically as being misleadingly ambiguous. I personally got bored around two thirds mark, so didn't spend much time worrying about it, I guess I'd have taken the bug ending at a push, which we sorta get hints at from the sisters disturbed pov.