Salem Secrets is a fairly OK sort of a puzzle/adventure game. It's the type that's worth buying second hand, but maybe won't be at the top of your most wanted list. The game offers fairly decent graphics, some great puzzles that will get the grey matter going and a free roaming playing area to wander around and explore.
The reason for 3 stars for me is that the main let down in my eyes is it relies too heavily on the many "Find X Objects" puzzles which to be honest makes you think the designers ran out of ideas after a while. These puzzles are fine if there's just one or two throughout the game, but at one point I had to do about three in a row in order to find key items and it started to feel a bit tedious. Another gripe might be that some of the puzzles are unintentionally tough due to the DS graphics - the rebus puzzle for instance has a few pictures that aren't too clear what they are meant to be.