My foot's in the stirrup,
My pony won't stand;
Goodbye, old partner,
I'm leaving Cheyenne.

-- Old cowboy song

Leaving Cheyenne, Larry McMurtry's second novel, traces the loves of three West Texas characters as they follow that sundown trail: Gideon Fry, the serious rancher; Johnny McCloud, the free-spirited cowhand; and Molly Taylor, the sensitive woman they both love and who bears them each a son. Tragic circumstances mark the trail but McMurtry's style never turns melodramatic or sentimental.