DS Mackenzie Clarke (Anna Samson) is back, fresh from having wrecked another of Glenn’s (Tai Hara) weddings and determined never to follow her heart again.But ignoring her heart won’t be easy. The arrival of her force-of-nature mother Jillian (Kerry Armstrong) puts Mack's mettle to the ultimate test and there's something undeniable about the raffish charm of the new pathologis...