Caught jerking off by the Jehovah's Witness

On an ordinary afternoon, a cute Jehovah's Witness knocks on your door. You decide to let her in and hear her pitch. Meanwhile, while she's busy talking about how difficult her life was before Jesus, you're busy stroking your cock. The young evangelist catches you and, in a series of increasingly dark revelations (which include her joining you and making you jerk off at her precise instruction, all while lavishing worship upon her, it's revealed she may not exactly be who she says she is.