I went out to a park this morning with my AT Pro, with a forecast of rain later in the morning. So I decided to rush out the door to do what I love. I was sweeping my Pro side to side and all of the sudden I get a faint but distinct high pitch sound reading between 82 and 99 depending where I was standing, and with a depth of 10+''. Though the "bing" was faint I started digging. I kept digging, making sure I was on the proper spot as I used my Pinpointer, but nothing. I dug a hole just about 2 feet deep and still nothing. My detector was telling me that something was there, with a very recognizable and high pitch sound, but my eyes couldn't see anything and my pinpointer couldn't find anything either. I kept telling myself, this is it; the next bit of dirt you dig is the one with the find. Finally, the rain started coming down, very hard I must say, and after a last "ditch" effort and still nothing to show for, I decided to call it quit and fill my hole. I left with a disgusted taste in my mouth, wondering what my detector had discovered. I guess we'll never know. Now, the big question: has any of you left a search without a find? and if so, please reassure me that I hadn't committed the ultimate detectorist sin to leave a dig without the goods, or not so goods. Thanks guys for any input.