Bingoed
by Patricia Rockwell
Essie Cobb, 90-year-old senior sleuth, and her three pals--Opal, Marjorie, and Fay are on the trail of mystery. They're determined to find out why one of their fellow residents at the Happy Haven Assisted Living Facility suddenly fell into a coma after winning the grand prize of one dollar at the weekly Bingo game. And when these ladies make up their minds to do something--watch out!