With a good 'ol monologue

"You weren't infected at all!" Sheriff Forrest looks between the soulless eyes of the two once-innocent teens before her, attempting to wiggle free from Alice's grip.

"Hmmm, that's just the thing isn't it?" you husk. "I was infected, and it's your fault!"

"Impossible, I killed that horrib--"

"SILENCE, UNGRATEFUL BITCH!" you roar, slapping Rebecca. "You were mind-controlled by a MARTYR! When you sent him to the Goddess, you were COMMANDED to do so! That interrogation room was filled with a delicious viral mist. We weren't supposed to notice. By the time the Martyr allowed you to destroy his mortal coil, I'd breathed it aaaall up! I really felt it once I got over here, and I just knew Alice would love a taste." You punctuate your monologue by stepping over the sheriff to give your friend a deep kiss.

"Mmmh! She's right, you know!" Alice whispers into Forrest's ear. "It's so very tasty."

"I'm so sorry, I'm s--"

"Words aren't needed, whore," you purr as you sit your dripping pussy on Rebecca's mouth.

The Sheriff coughs and sputters, but you've already dripped some nectar past her lips.

"The taste is as delicious as advertised, it seems," Alice deadpans, reaching down to undo the cop's uniform buttons.

"OHHH yeah, right there, Rebecca! Let the darkness back in!" you scream, as Forrest begins licking in earnest.

Alice has Rebecca completely naked now. Having deemed restraint unnecessary, the exotic Asian shifts around, her face mere inches from the officer's blonde-furred vagina. You shiver in micro-orgasm as you feel Rebecca's moan within your depths. You look down into your friend's pitch-black eyes as she smirks around her tongue, deeply buried into the sheriff's cunt.

WELL DONE, SLUTS! the pleasure you feel from the demon's complement is nothing compared to the pleasure you receive when he rams his ethereal phallus into your ready mouth.

TAKE MY GIFT, SHARE THE GLORY OF THE MISTRESS! SHE CALLS FOR ME... the demon follows his words with a rush of wispy "cum" blasting down your throat. If the pleasure you felt breathing the mist was strong, this is a supernova. The undiluted gaseous virus is blasted straight into your brain, nearly causing you to faint with the strength of your orgasms. Your pussy twitches violently around Rebecca's tongue, spraying black ichor across her face as it overflows her needy mouth.

With a moan of surrender, the Sheriff's internal struggles end, and she reaches up to grab your ballooning ass as her own pussy sprays into Alice's maw. By the end of her long climax, her juices are beginning to stain black. On wobbly legs you stand, grinning at the dejected whimpers and contented moans from your convert as your pussy slides off Rebecca's face, followed by sticky streamers of your dark girl-cum. Alice slowly retracts her serpentine tongue from the cop's pussy, lapping some ichor from the blonde's black stained inner thighs.

You look down to behold your handiwork.