The mystery of how the hallucinogenic drug PCP was used to secretly spike lobster chowder on the Nova Scotia set of the 1997 blockbuster movie Titanic might be closer to being solved.

Whoever dosed that fateful pot of soup in the Dartmouth, N.S., catering truck sparked one of the most strange, dangerously illegal, and yet still weirdly charming episodes in the history of Canada’s film-production industry. Nearly three decades later, it remains widely remembered and frequently retold as a shambolic drug-addled hilarity, like Hollywood meeting the Trailer Park Boys.