Play Book Tag discussion

Clare's coffee house is hosting a fashion event, when someone dies of of cyanide poisoning and one of her staff is arrested on the spot (obviously not guilty since it's far too early in the book for the real murderer to be known) because he both made and served the drink (but then, the drink was meant for someone else, but to know more about all of that you have to read the book). Suffice to say that Clare starts working on figuring out who the real murderer is posthaste. It might be that there is more than one mystery afoot...