I bought 3 sealed bags of LEGO at the second hand store. They are unopened but have no box/ instructions. I looked at some other threads here and tried to identify the sets using piece numbers and the Peeron site but haven't had luck. I'm hoping to post pictures here and hopefully someone can help me..... The first bag has a police theme, a robber and a bubble canopy window. I believe it's the complete set as the bag has no number. The other two are harder, they are numbered bags so obviously part of larger sets (both 6 so not part of the same set.....)
Found it, it's LEGO City Brickmaster, a book-set (ISBN-13: 978-1405356237),
How did I do it ? I used my trusted pyrebrickable, using a few pieces in the bottom right corner, and the only set that contains both black knit cap, white cap, and light bluish gray 1x1 cone is this one, numbered DKCity-1 in the rebrickable dataset.
Good building !