A young prostitute's body is retrieved from Vancouver Harbour, and Sunny notes striking similarities to a string of previous deaths. A chance comment to Da Vinci leads him to re-open several cases, causing a further rift with his ex-wife Patricia, who did the original autopsies, and with his boss James Flynn, who ruled the deaths as accidental.

Da Vinci reopens several cases, causing a further rift with his ex-wife.

Da Vinci is convinced a serial murderer has been on the loose for years.