Frozen Solid A Chance Colter Mystery by Jeffrey Birch

ex-cop Chance Colter meets a mysterious, beautiful woman banker in Montreal. She implores him to find her lost brother who has disappeared from Minneapolis. Colter agrees for a substantial fee. The woman has hired a competing group to find her brother. They see Colter as competition and try to eliminate him. It takes all Colter's cop skills to thwart their attacks and solve the mystery of the missing brother.