Innocent murderer a Cordi O'Callaghan mystery

"When zoology professor Cordi O'Callaghan reluctantly accepts an invitation to be a lecturer aboard the Susanna Moodie, a vessel ferrying tourists through Canada's Arctic, she figures it will be a breeze. Seasickness aside, Cordi becomes entangled in the deaths of two of her fellow passengers, both members of a close-knit fiction-writing group. The fatalities are ruled accidental, but Cordi suspects they're anything but. However, she lacks evidence and credibility, according to Martha Bathgate and Duncan McPherson, her sometimes reluctant sidekicks who try to keep her grounded."@en
"When zoology professor Cordi O'Callaghan reluctantly accepts an invitation to be a lecturer aboard the Susanna Moodie, a vessel ferrying tourists through Canada's Arctic, she figures it will be a breeze. Seasickness aside, Cordi becomes entangled in the deaths of two of her fellow passengers, both members of a close-knit fiction-writing group."@en
"When zoology professor Cordi O'Callaghan reluctantly accepts an invitation to be a lecturer aboard the Susanna Moodie, a vessel ferrying tourists through Canada's Arctic, she figures it will be a breeze. Seasickness aside, Cordi becomes entangled in the deaths of two of her fellow passengers, both members of a close-knit fiction-writing group."