The Lab Tech did it
Lab Technician Raymond Clark III has been arrested in the murder of Yale Student Annie M Le.
Someone emailed me to say that this case reminded them of Theresa's case (the town-and-gown angle I guess). Then I remembered that it reminded me of something from Theresa's case too.
In the early days of our investigation, Patricia Pearson and I got it in our heads that a Lab Technician from Champlain College might have murdered Theresa. Even better: we believed that the Lab Tech could have been an alias-wielding Guy Croteau, the Quebec serial offender convicted in 2002 for the murder of Sophie Landry. Three "compelling" pieces of evidence convinced us of this:
1. Croteau was from Quebec.
2. Croteau's mug shot looked like a photo from 1978 of the Lab Tech (we'll call him Bruce).
3. We needed a suspect.
Several problems quickly arose that made the theory implausible, beginning with Croteau's mug shot. Take one look here and you can see that Croteau was a chameleon (he looked like everyone). The big spoiler came when I actually tracked down the phone number of Bruce. By this time Croteau was on trial for the Landry murder. If I phoned and "Bruce" picked up, then the gig was up. But if I phoned and was told that "Bruce" was indefinitely indisposed? Bingo!
I phone. I'm so hoping to be told Bruce doesn't live there anymore. Phone picks up:
"Hello this is Bruce."
This was about when Kim Rossmo gave me my first piece of advice about amateur gumshoeing:
Don't chase suspects.