"Flower Shop Mystery: Mum's The Word" is the 1st made for TV movie in Hallmark Channel's latest mystery movie franchise. "Flower Shop Mystery" is based on the novel by Kate Collins. Abby Knight, a former lawyer turned flower shop owner, is starting over after the death of her husband with the support of her father and her daughter, who recently left for college. Life is good in the peaceful town of New Chapel, but when an SUV rams her prized vintage car, she's determined to track down the driver. She begrudgingly accepts the help of a new neighbor, the handsome and charming ex-Marine Marco Salvare. But their budding relationship is threatened when an acquaintance is murdered and Abby's good friend is the prime suspect -- and it all links back to the hit and run. Caught up in a tangle of menacing phone calls, police corruption and murderous road rage, Abby must work against the clock to find the killer or the next flower arrangement might be for her own funeral.