Murder at the Mansion — Jean Henry Mead

When her gardener is found stabbed to death on her lawn, Dana Logan-Grayson suspects that she was the intended victim. When her fellow amateur sleuth arrives from Texas, they learn that the men they helped to send to prison have escaped and are seeking revenge. The two women hop a plane for Texas and are followed, so they fly to Alaska and travel to a primitive cabin where they face even great danger.