Doing a search on a potential scammer's photos

I often receive photos from people on dating and hook up sites that I'm almost certain are scammers. I've tried doing a search of the photo using Google Image, but it almost never finds anything. Can anyone recommend a reliable photo search site that finds scammer's photos online?

[AlanJones]

Google image search or tineye.com. if you can't find the photos on either of those then you're not going to find them.

Locking this so it doesn't become a haven for spammers posting dodgy links.