The Revenge - Bathville Books, #2

Six months have passed since Paul, Dave, Cathy, and Krista met and solved their first case together. Now an established power team in their precinct, the detectives are inseparable. A convict Paul arrested five years earlier in Brooklyn is released from prison, where he has been plotting cruel revenge against Paul. He first makes his presence known by sabotaging Paul's car. Then an attempt is made on Krista's life.
But these are only warm-ups, mere teasers for what he really has in store. With the abduction of Dave and Cathy, Paul and Krista soon learn their friends' lives hang in the balance. They have no clues to find their friends and they know time is running out. Paul's nemesis always seems to stay one step ahead. Even with a tip that finally puts them on track, the ex-con calls all the shots and Paul and Krista can only fear their friends will never be found or, if they are, it will be too late.