So devoted… but playing away

LEO ARGYLL: Played by Bill Nighy, widower of victim Rachel (Anna Chancellor).

Guilty? Leo is preparing to marry his mistress Gwenda and it is possible that he bumped off his wife so he could start a new life with a much younger woman.

Not Guilty? Could a doting family man like Leo, pictured with Rachel, above, really plan the murder of his own wife?