Missing Money I

You make it onto a game show that presents you with $N$ doors. There is a large prize behind one of the doors, while the others are empty. The host lets you spin a prize a wheel that will either reveal to you the door that the money is behind with probability $p$ or nothing with probability $1-p$. If you don't receive any information from the wheel, you guess uniformly at random. Find your probability of locating the prize when $p = 1/3$ and $N = 5$.