Read or Suffer -Z

You made it to the location. The four of you look around with faces full of fear since it’s an abandoned warehouse.

“Guys, I’m getting really worried,” Stacy said as she jumped.
“I think we all are.” You responded back.

The four of you slowly walk up to the door before you open the door, Josh stops and comes up with an idea. “I think we should call the police now and tell them where we are so if our plan works then the police will be there.”
“Or we could go in now and call the police after we capture Z.” Peter says with a sense of adventure.

You and Stacy make the final decision. What do you do?