It was one drink too many for 72-year-old Evelyn Guilfoyle, found dead the morning after a raucous party in the family's back garden pub. Somebody had spiked her sherry with poison. But the woman had a terminal illness and would have been dead before the year was out anyway. Why the hurry...? Family, friends and neighbors had crammed into the tiny pub that night. DI Liam McLaughlin and the ragtag officers from the Major Investigation Team are...