r and brother stuck inside their house with nothing to do. All Ariel and Bruce want to do as they watch the rain fall outside is to go play in it. Mom suddenly calls for Ariel and Bruce from the kitchen, and that is where their investigation begins. Can Ariel and Bruce figure out what made this mud print? The siblings take one good look at this mud print, and then their imaginations run wild! Could this mud print belong to an animal, human, or worse something not from this world but from another planet? Yikes! There is so much to choose from. Will Ariel and Bruce actually discover what made this mud print before the rain stops, or will they ever find out really what made this mud print ever? Come join us on this investigation, and be a detective with Ariel and Bruce. Can you find out what made this mud print before Ariel and Bruce, and were you right? Let's find out little investigator! To the mud print we go!