Piper Nielsen is the newest concierge of the Montecito introduced in season 5. She frequently socializes with both Sam and Delinda. In the episode "The Glass is Always Cleaner", she was arrested at a rave party with Sam and had to be bailed out by Mike. In her first episode, she states she is just 22 years old but later slips and says she is 25. She was fired for letting a minor gamble, but Cooper paid a $1,000,000 fine to hire her back. Piper never knew who her father was, but it was recently revealed that her father was a Marine who was Cooper's best friend during the Vietnam War. He died sometime after Vietnam. Before he died, Cooper promised him that he would keep an eye on Piper. Mike and Piper were recently married. With the help of Cooper and Delinda she won a magazine award as Las Vegas' best concierge.