The team looks for a man who goes missing after a late-night ocean dive; Elena and Danny take their relationship to the next level.

Jack reluctantly agrees to look for his daughter's boyfriend when he runs away from home.

The team searches for a teenager who was last seen in a video being tormented by her abductor.

The team looks for a journalist who went missing after writing about a politician's corruption.

The team looks for the son of a billionaire who disappears after his plane crashes.

The team finds plenty of suspects when a high-end Russian matchmaker disappears.

The team searches for a missing psychologist whose brother was imprisoned for rape; Martin and Kim's relationship heats up.

The team searches for a trial consultant who goes missing during a big civil case; Jack and Samantha adjust to Brian spending time with Finn.