Caught red-handed = To be caught in the act of committing a misdemeanour, with the evidence there for all to see. Honor among thieves = this means that even corrupt or bad people sometimes have a sense of honor or integrity, or justice, even if it is skewed.

To be thick as thieves = to be very close friends (and maybe mischievous) To rob Peter to pay Paul = to pay off one debt, but put yourself in another debt by doing so. Like getting another credit card to pay off your first card.

Once a thief, always a thief=It's hard to lose a bad reputation. To be as afraid as an old thief=To be really afraid. Opportunities make thieves=everyone will commit a crime if they have the chance.

To be a thief of your own wallet= To spend more money than necessary.

I like the Free Dictionary site. Here's what they listed under "thief": http://idioms.thefreedictionary.com/thief