Llewellyn paused for breath before continuing. ‘So, yes, I do believe she killed herself using the same means as Barstaple’s murderer. She didn’t know what it had done to him, didn’t know its horrific symptoms. It must have seemed both simple and expedient to use the same poison to commit suicide. Not only would she leave a miserable existence, but she would also put her colleagues under a double load of suspicion. I imagine she found the thought very satisfying. You’ve said often enough yourself that suicides are frequently amazingly ignorant about the means they choose to end their lives. Few of them seem to take the trouble to discover exactly what their chosen method will do to them.’
Rafferty was silent for several minutes while he digested it all. Then he realised that Llewellyn had
