Late summer is perfect for classic mysteries - think of Raymond Chandler's hot Santa Anas and Agatha Christie's Mediterranean resorts - while big ambitious works of nonfiction are best approached in September and early October, when we still feel energetic and the grass no longer needs to be cut.

Sometimes the very best of all summer books is a blank notebook. Get one big enough, and you can practice sketching the lemon slice in your drink or the hot lifeguard on the beach or the vista down the hill from your cabin.

From the late 19th to the early 20th century, the December issue of almost any general-interest magazine regularly featured a holiday horror or two.

September is the new October,

So, realistically, we are looking at commercial deployment as early as September or October of this year.

In classic noir fiction and film, it is always hot. Fans whirr in sweltering hotel rooms, sweat forms on a stranger's brow, the muggy air stifles - one can hardly breathe. Come nightfall, there is no relief, only the darkness that allows illicit lovers to meet, the trusted to betray, and murderers to act.