In Saskatoon, Saskatchewan, it appears that someone was doing a presentation on… chemistry? Don’t ask me.

However, not long after, this masterpiece was vandalized and some information has been lost.

And what’s this – “Lexy was here”? Is our suspect the type to show off their crime, or is this to throw us off the scent?

I could see Rob or Jim feeling competition between them when it comes to teaching about gel chemistry – could it be sabotage, or is that too obvious?

Maybe we should be looking to someone less expected – Emily, who flies under the radar?

Deb, who knows the ins and outs of the industry like the back of her hand?