Danno has a bone to pick with McGarrett, but the Hawaii Five-0 crew has a more pressing espionage issue to tend to during "Hōkū Welowelo (Fire in the Sky)."

When three bodies turn up alongside some strange debris, conspiracy nut Jerry Ortega (Jorge Garcia) pops by with some vital information. As the Five-0 team looks into the possibility of a covert Chinese satellite, Danno's (Scott Caan) mother (Melanie Griffith) finds herself in the middle of the action when McGarrett (Alex O'Loughlin) sets her up on a ride-along with Grover (Chi McBride).

McGarrett and Co. have learned to trust Jerry and his seemingly outlandish theories, so they don't ask too many questions when he shows up spinning a tale about a secret Chinese spy satellite (see the first video below). The intrepid investigators aren't the only ones who catch wind of his theory, however, and Jerry will need to break out a taser and some duck tape when someone comes looking to silence him.

In the meantime, Danno's short fuse is running out between his parent's divorce and McGarrett's cavalier decision to allow his mother in the field. While his mom may be able to sooth his anger with a nice tuna fish sandwich, Steve probably won't get off so easily (see video below).

Hawaii Five-0 airs Fridays at 9 p.m. ET on CBS.