High Spirits : The 12th Murray Barber P.I. Case

High Spirits Case story twelve Murray Barber is a private investigator with a difference. He can hear the dead speak. Along with his 'late' friends, Alistair and Rita, and Jeff, his friend from C.I.D., Murray solves a variety of cases. The Sullivan family sit for dinner on a humid July evening in 1888. Can Murray discover which of the ten diners were trying to poison who and with what?