Lawrence Block, in Keller by a Nose,” asks what obsession holds more hazards than betting on the ponies. The answer will surprise you…Max Allan Collins’s “That Kind of Nag” proves that it’s bad to play the wrong horse, but worse to pick the wrong woman…”The Great, the Good and the Not-So-Good” by H.R.F. Keating warns against old English ladies at the racecourse…Joyce Carol Oates shows how a young woman teams to trust a prize stallion more than her violent lover in “Meadowlands”…and Scott Wolven’s “Pinwheel” offers a Japanese lesson in flying horses and honor among thieves.”