Bay seniors who enjoy an extra helping of mystery with their supper might consider hopping aboard the Napa Wine Train on September 2. Eight detectives will be roaming the cars solving convoluted murders (unless you beat them to it.) The 3-hour interactive evening also includes a 4-course “gourmet” dinner (wine not included). The whole ticket is $145. Boarding on this mystery train starts at 5:30 in downtown Napa.