Vacation murder- Detective Riddle

A couple goes on a camping trip, but only the husband returns. He claims that his wife fell off a cliff and died. When Detective Mehul gets in touch with the travel agent, he immediately arrests the husband. Why?

The travel agent reveals how the husband only booked a one-way ticket for his wife, whereas he booked a return ticket for himself. The travel agent reveals how the husband only booked a one-way ticket for his wife, whereas he booked a return ticket for himself.