The myatery of cabin 312 is the third in the DCI Buchanan mystery series.
Recovering from a very bad car crash, Buchanan takes his wife Karen on a two-week luxury cruise through the Dutch and Belgian canals. During the cruise, an English couple go missing. When their cabin is searched, blood stained female clothing is found but there is no trace of her, or her partner. Instead of shore trips, relaxing at the bar and reading, Buchanan is thrust into investigating the mystery of what happened in cabin 312.