If you're looking at an investment that yields more than 10%, you know that there's likely going to be some risk involved with it. A yield that high and that safe would be quickly scooped up by income investors. When that doesn't happen, it's a sign that there is some hesitation around the stock and the safety of its payout.One high-yielding stock investors might be tempted to take a chance on these days is that of real estate investment trust (REIT) Innovative Industrial Properties (IIPR -1.50%). The REIT' ...