All the ciphers were encoded with a 16 letter shift.

Mxo qhu oek xuhu?
Why are you here?

Qhu oek qmqhu?
Are you aware?

Yi jxyi jee vqh?
Is this too far?

voice 1: What do you mean? You were supposed to keep an eye on Adam this weekend.

voice 2: It's been 2 days, he could be anywhere by now.

voice 3: How am I supposed to know? All I can do is hope that they find him.

voice 4: They have some leads, but there's no news yet. I know, I know. (this one is kind of hard to hear)

voice 5: They found him...