The woman behind Valeria goes for her back again.

Attack: 24 Damage: 11

The invisible imp snickers with glee as he is free to stab the old man in the back, becoming visible in the process.
Stinger: 24 Piercing: 6 Poison: 7

This time Gorin shields himself from the attack, seeing it coming, but completely misses her when trying to attack her with a Javelin:

Nat 1 for 6 dmg.

Quote from Oberon99 >>

The invisible imp snickers with glee as he is free to stab the old man in the back, becoming visible in the process.
Stinger: 17 Piercing: 8 Poison: 8

 The old man lets out a pained groan as he goes down onto one knee. He tries to rise but begins to cough up blood tinted green. After a heaving cough, the elderly man falls to the side, dead.

Quote from Secretfool >>

This time Gorin shields himself from the attack, seeing it coming, but completely misses her when trying to attack her with a Javelin:

Nat 1 for 6 dmg.

 Critical Fail Consequence - 5

1. Character will hit ally
2. Enemies will have advantage on melee/ranged attacks on him (Will flip a coin)
3. Character drops and falls prone
4. Character falls prone
5. Character drops weapon
6. Nothing happens

Arkon grunts as a dagger strikes him from the dark. He squints into the inky blackness for a moment before taking a steadying breath and reaching into his pack to pull out his lantern, which he lights and secures to his belt. He may not be a genius, but still knows enough not to waste his time swinging blind, especially with friends around.

Action: Light lantern and attach to belt. (A Hooded Lantern casts Bright Light in a 30-foot radius and Dim Light for an additional 30 feet.)

Bonus Action: Second Wind, +12 HP 

Sarris sees a statue seemingly come to life and move forward to try to engage.  "Good thing I didn't have my bow out this time, " he thought as he engaged the attacker.

{game log}  Longsword >  To Hit:  21     Dmg:  7

and thanks to Weapons Mastery >>>    Your training with weapons allows you to use the mastery property of Longswords:

Sap. If you hit a creature with a Longsword, that creature has Disadvantage on its next attack roll before the start of your next turn.

(( I hope I did 'sap' right. ))

Zim moves to c4 and uses a morningstar Attack: 26 Damage: 14, sap on hit

Valeria cries out in pain, and then in hellish fury as she feels the blade slide into her back, reflexively calling upon the fires of hell to wreak vengeance on her cowardly assailant. 

(Reaction: Hellish Rebuke, dex save 14 or 10 fire)

Mal meanwhile is quite pleased with himself, having slain an old man, who coincidentally turned out to be a myrkulyte. As the mischievous imp hears the furious cries of his mistress he realizes there is more slaying to be done, so he flutters back out to find the closest position where he can stab another cultist in the back.

(Move to position behind closest cultist to flank for advantage, then readying action to turn invisible right after stab.)

Still in agony over the wound and the blood on her new suave outfit, Valeria furiously orders her familiar to keep stabbing, then trying to move into safety.

(Stinger: 13 Piercing: 8 Posion: 6 , Val then tries to move away from any still standing bhaalists without provoking attacks of opportunity.)

Since old man is dead Durak will fling a fire bolt at the nearest enemy

13 to hit 2 fire damage 

Quote from Oberon99 >>

(Stinger: 13 Piercing: 9 Posion: 8 , Val then tries to move away from any still standing bhaalists without provoking attacks of opportunity.)

 (With the Nightblade next to you, unable to do so unless disengaging. And Imp is left visible as its attack is used through reaction, which leaves it unable to do its readied action.)

The woman before Gorin is stabbed in her neck as she gives a last smile to Gorin. She falls down, dead.

Quote from Weathervision >>

Since old man is dead Durak will fling a fire bolt at the nearest enemy

13 to hit 2 fire damage 

 The nightblade is nearly is knocked down as Zim charges her, landing a hefty blow on her side. But the killing blow comes from Durok as she's shot down by his fire bolt.

Updated Map -

Updated Initiative - 

The last woman just giggles with glee despite her allies being killed. "Blood! Glorious Blood!" She goes for Sarris once more.

Attack: 9 Damage: 5

Gorin graps another Javelin from his back and throws it at the final woman:
to hit 18 for 8 dmg.

Sarrin frowns at the crazed figure screaming for blood.  "If it is blood you desire; I shall see what I can do to aid you."

{game log}  Longsword >>  To Hit:  Nat20+8 = 28     Dmg:  11 and sap

The ranger makes a mighty swing to cleave the arm which holds the dagger.

Zim will search the bodies if they are all down.

Otherwise, Zim moves to use his morningstar Attack: 10 Damage: 10, sap on hit

"Yo, Zim... make certain to collect those knives.  Never enough knives when you really need one."  Sarris smiled as he checked his longsword's edge for damage.

"How do I look?" The redhead turns and asks her goliath de facto bodyguard, showing her back, seeming more concerend about the ruined white shirt than the wound itself. "To the nine hells with these cultists, this is personal now." She growls as she uses magic to clean herself up the best she can. "And yes, say hello to my...um...chaperone." She motions to the fluttering little imp that then turns invisible and disappears again to scout for more threats, hoping to to a better job of it in the future, even feeling a bit ashamed the bhaalists got to his mistress. "He's not a particuarly handsome devil but you can trust me to have him on a short leash, no devils work unless necessary to stay alive, and it's not a sinister as you might fear, a strict business arrangement you might say." Valeria explains with a friendly smile. "Now, let's find that secret entrance to the cultist lair." 

(Cast prestidigitation)

Mal perception to find secret entrance to hidden cultist lair: 17