"A substantially similar novel entitled Drijflijk c1993 was previously published in Dutch"--T.p. verso.
Summary
PI Henk Grijpstra flies to the U.S. to help Rinus de Gier, his old buddy from Amsterdam police days. De Gier, who lives in Maine, kicked his girlfriend down a cliff while drunk and someone is threatening to reveal the murder unless he pays up. But is she really dead? By the author of Hard Rain.