Carol's phone beeps.
SFX <beep> PHONE MESSAGE (MFL) Here is your son asleep. SFX <ring!>
We see on Carol's phone (translated) that the caller has no Caller ID.
Carol answers the phone, and continues to hold it so can see it together.
CAROL (MFL) Who is this? SFX <beep> PHONE MESSAGE (MFL) If you want your son back you will follow our instructions precisely. SFX <beep> PHONE MESSAGE (MFL) Turn on your camera. CAROL (MFL) Okay. It's on. Now turn on your side. Show me my son.