At 5 P.M. on a snowy night, Maurice Locksley, sometime literary stud, stops off at a Boston pub and there, with a glass of beer, launches a 10 1/2 hour journey into the riskier regions of the heart. First he’s off to dinner with his wife and 4-year-old son . . . then on to an evening in the suburbs, where his ex-wife and teenage children wait . . . and then back to town for a post midnight tryst with Maggie, his exuberant young mistress. Maurice, at forty, is poised on the brink of adventures yet untaken, but where he wanders may put him at risk, caught between the rock and hard places of love.