"The 5th Horseman" by Patterson is the 5th book about Lindsey Boxer and the Murder Club. Lindsey is a Lt. of the SFPD in homicide and gets invited to lunch with Yuki, the latest member of the club, and her mom, Keiko. The mom collapsed and was sent to the SF Municipal Hospital where she got good treatment and was in full recovery when she was given the wrong medicine and died. This was not the first death that the hospital experienced, there were many unexplained deaths. Someone was playing God and the hospital was being scrutinized for this. They end up in court for mal-practice case. Along with this, Lindsey is looking at several murders of young women. They were found dressed in expensive clothes and propped up in a nice car to look like a mannequin. With budget cuts and a shortage of help, Lindsey seeks help from her friends in the Murder Club. Also Lindsey is able to get enough evidence against the hospital to survey the problem.
Patterson has provided the reader with enough suspense to keep the interest going to the last page. Lindsey is the only character exploited and to get to know some of the other characters in the club would be nice. There is a surprising twist at the end that is unexpected. All in all the book is a good, fast read and well worth the time.