Case of the Despicable Duo

BOOK TWELVE in the series: No one shed a tear when either of them (a wealthy father and his adult son) were murdered but when one of Raymond Masters' friends is accused of doing them in, the old detective packs his bags and arrives to direct the investigation. Legitimately motivated suspects abound, including the maid, long mistreated by both men; the handyman, a loner and newcomer to the area; the brother, an expert marksman who had a life long feud with the family; the security guard, with unspoken motives; the drifter, whose presence seems oddly out of place; the brilliant teenage twins next door, with tempers and revenge on their minds; and their mother, recently done wrong by the younger of the deceased. The deadly shot had clearly come from Masers' friend's bedroom window yet he works to prove otherwise. As is often the case, gadgets play a role in the c omission of the crime.