While helping her crippled grandfather by diving for sponges from the family boat after the death of her diver father, Alexandra discovers that someone is using their sponges as a hiding-place for smuggled cocaine.
- ISBN10 0395355710
- ISBN13 9780395355718
- Publish Date 1 November 1988 (first published 12 July 1985)
- Publish Status Out of Print
- Out of Print 15 December 2009
- Publish Country GB
- Imprint Houghton Mifflin
- Format Hardcover
- Pages 146
- Language English