Swap to save my life

I have no idea what to do, I cant leave and shelly is... she's dead. Are they going to kill me to? These two men are just standing there in the door way so I can't leave they haven't even said anything since the other one left like ten minutes ago. Five more minutes past and he walks back in with his phone In his hand and cigarette in his mouth still lit, he glances around the room then fixes his eyes on me. " Alright listen and listen damn well cause I'm only gonna say it once, we know you took your dead friends cell phone and we want it. Hand over the phone and you get to live, don't and ill personally make sure you die a slow and extremely painful death."

"Ok, the phones in my work bag by the door just let me get it and I'll give it to you." I muttered in a stuttering voice.

He turned his head to the door way and told one of his men "You go get her bag." The man headed to the door way and brought back the bag and handed it to the man in charge. He then tossed it at me and said "Here now hurry up."

I hurriedly searched through my bag for Shelly's phone, honestly I can't say that I'm very happy about handing over my dead friends phone to the ones who killed her and more importantly she died protecting it so how could I hand it over. Thankfully my phone is broken and I have the same model as her, so I grabbed my phone and buried hers deeper in my bag. I lifted my head and reached out my hand to the man in charge with the phone in hand and said "Here this is her phone."

He reached out and took the phone "Much obliged little lady. As agreed you get to live, however we are gonna need some assurance that this is the real thing." He said as he crouched down in front of me, "Wha what do you mean?" I murmured as I back away from him a little.

"I mean this." he swiftly shoved a needle into my neck. "AH! What was that you said you'd leave me be!"

"No, I said I'd let you live, I never said where. Now then goodnight." he replied with grin on his face and a chuckle in his voice.

"Wha.." My eye lids became intensely heavy I couldn't keep them open, what was in that shot? Before I could think another thought my body became limp and I fell to the ground, my head then went blank and I fell asleep.