The Three Hostages (UNABRIDGED‪)‬

"The Three Hostages is the fourth of five Richard Hannay novels. The Richard Hannay novels are action/mystery/spy novels with a James bond feel. This book starts out with Richard Hannay married to Mary Lamington living in Fosse Manor. He is asked to work undercover and figure out who kidnapped three children of prominent people, while Scotland Yard investigate the abductions officially. Different friends help him solve the mystery. It's suspenseful and a fun action packed mystery!
- Summary by Kimberly Shoemaker"