Mmm. He's not a canon Saint (at least I don't think so), but you could try petitioning Daniel the prophet. You could also just ask the Christian God to help you (I assume you are Christian since you are asking about Saints). I suggest Daniel's prayer before and after the divination as it's worded very well for this sort of thing. You can find it in Daniel 2:20-23.
Saint Clair of Assisi is a saint that is often called upon in divination becasue she is the Saint of Clairty (also in Vodou as Klemezin Klermey) she provides clarity so that you see everything but I always advice you develop a relationship with Saint Clair instead of just going to her off the bar which she will not help