Yes I believe...and have had encounters with them since I was three...just like so many others who have posted. I am not real sure why we are so surprised by spirits of the departed visiting us and communicating with us...after all, who in the world do you think Jesus was talking to up there on that mountain when Moses and Elijah appeared to him??? If it could happen to Him, why do we consider it so strange when it happens to us?? And while I don't think we should go looking to talk with spirits/ghosts, if you are allowed that experience, I would take your example of how to respond from Jesus...not a strange experience at all!! They may, like in His experience, have some very important information to tell you about, considering Moses and Elijah spoke to Him about what He was shortly going to face!