The Burnt Orange Sunrise is book 4 in the Berger and Mitry Mystery series.  This installment takes place in the dead of winter and the weather creates a Christie-esque locked room, in this case a locked B & B.  Des and Mitch find themselves trapped along with other guests by the weather, downed trees and a power outage.  Soon it becomes evident that one of their companions is  a murderer.  This was another good installment in the series with a side plot that is left as a cliff hanger.  Very enjoyable mystery read!