Thanks to the supernormal patronage of a man called Gage, Skean has lived through four of five lifetimes as an ornithologist, but when he comes under the influence of Blake (a person? . . . a force?) Skean starts running into beautiful women who lecture him about the dangers of too much science and discovers in himself mental powers that only Gage's best protegee, a reptilian woman psychologist named Gannon, can deal with. But who is Blake anyway. . . Gannon? Skean himself? the irrational life force fighting its perpetual no-win cloak and dagger game against the rational? The answer is all of the above, and if the dialogue in this philosophical detective story sometimes echoes Woody Allen's version of Sam Spade doing a missing persons report on God, the similarity doesn't necessarily detract. An offbeat entertainment, if entertaining the infinite happens to be your thing.