The Lenkov-verse is a media franchise that consists of a group of three interconnected television reboots that share a fictional universe, and their related media. All three of the television series, Hawaii Five-0, MacGyver, and Magnum P.I., were developed by Peter M. Lenkov who also served as the showrunner on the series. They are each American crime dramas that aired on CBS. Hawaii Five-0 revolves around a task force, led by Steve McGarrett, that investigates crimes in Hawaii. MacGyver centers around Angus MacGyver who uses nonviolent methods to keep the world safe, with the help of a team of undercover government agents. Magnum P.I. follows private investigator Thomas Magnum, who solves crimes in Hawaii with the help of his friends. The universe is also connected to the so-called Bellisario-verse, which consists of the entire NCIS franchise and JAG, via two direct crossovers between Hawaii Five-0 and NCIS: Los Angeles.

The fourth season of the American crime and action drama Magnum P.I. premiered on October 1, 2021, on CBS, for the 2021–22 television season. It concluded on May 6, 2022. The series is a remake of the 1980 series of the same name and centers on Thomas Magnum, a former Navy SEAL who works as a private investigator and solves mysteries with his business partner Juliet Higgins and other friends. It stars Jay Hernandez, Perdita Weeks, Zachary Knighton, Stephen Hill, Amy Hill, and Tim Kang. The season was ordered on April 15, 2021, and consisted of twenty episodes. On May 12, 2022, it was announced that CBS had canceled the series after four seasons, however, on June 30, 2022, the series was picked up by NBC for a fifth and sixth seasons, consisting of twenty episodes. Dennis Chun appeared in the sixteenth episode of the season as his Hawaii Five-0 character in a minor crossover event. The season premiere, "Island Vibes", was watched by 5.23 million viewers.