Yeah, sounds like Silas could be the "big bad" they were warned was coming.
And I'm a fan of David Alpay's (the professor) so I'm glad to see his character arc extending. Though he's playing such a smarmy bad guy that I'm looking forward to seeing Bonnie inevitably taking him down!
Also glad Jeremy is getting something to do. And Matt too.
Though Jeremy just chopping at the hybrid at Caroline's command was brutal. Especially as Caroline knows what the other hybrids mean to Tyler. Not sure that really worked for me.