Pen Dipped in Poison

Retired schoolteachers and amateur sleuths Liz, Pat and Thelma have a brand-new mystery to solve in this witty tale – perfect for fans of The Thursday Murder Club and Robert ThorogoodCurious white envelopes have been delivered to friends and neighbours. Inside are letters revealing the deepest secrets they have tried to hide.As one by one, careers are ended, marriages destroyed and no one is beyon...