Callahan's unique ability to talk the talk of the superanuated hippie and crawl the drawl of small-town South allow her to dig into the victim's past and come up with some succulent revelations. Her search also turns an old friend into a new enemy-one who will kill to keep a secret hidden.aCore fans will be particularly pleased that Garrity's usual cohorts-her ornery mother, outragious employees, and on-again/off-again lover, Mac (on-again here)-make return engagements in Strange Brew.