Professor Andrew Basnett leaves his hometown in England to spend Christmas in Australia. There he visits his old colleague, Tony, and soon learns that Jan, Tony's new bride, is suspected of murdering her first husband. Tony has his own suspicions about Jan when a guest is killed at a family dinner with a chunk of the same crystal that did in Jan's first husband. Oh, and Jan has disappeared. It's up to the professor to reveal the truth in this dandy mystery from 1985. (CH)