Clue of the Twisted Candle-Edgar Wallace

Darnel Park is situated in a county that thrives on gossip and secrets, and the Darnel family, as it turns out, has many of them. An attempt at Sir Allan Darnel’s life, after various misunderstandings and misdirections, reveals an estranged son and a mysterious fiancée, and the Darnel family scrambles to conceal these new developments from not only the county but the Scotland Yard detective called in to investigate. - Summary by Adrienne Prevost.