This all starts with a sort of roll-call where a lawyer checks the presence of the "Greene" family at the bedside of their mother. A condition of their late father's will is if they don't all live together for fifteen years after his demise, then they don't get a sou. Not surprisingly, they don't exactly see eye to eye so when one of them is shot, it's hardly a shock. The police - the instantly recognisable Eugene Palette as "Sgt. Heath" - duly arrive and enlist the help of detective "Philo Vance" (William Powell) who quickly discovers that any one of them could have done it. Thing is, the…