Hi randomep,
Check out Quality of Earning by O'Glove the book does a great job of showing potential signs of fraud in the balance sheet. The Art of Short Selling is great as well, but I would suggest Quality of Earnings first.
Just because you have a Big 4 auditor doesn't mean the company will be fraud free. If it is a smaller accounting firm, research them -- often times they are fine but if they have worked with other fraudulent firms it is generally best to stay away.
I would heavily discount inventory of a small cap (or large company for that matter) if you are taking a balance sheet approach to valuing a company.
I don't know if I have answered your question. Reviewing financial fidelity can be tricky, it takes three measures of skepticism for each measure of optimism.