Fans are wondering how Frank Reagan (played by Tom Selleck) got away with an audacious move against Mayor Peter Chase (Dylan Walsh) in the latest episode of Blue Bloods season 13. In episode 18, titled Family Matters, Frank presented the mayor with a bill of services live on-camera as a protest against the police's cut budget after Chase demanded that Frank station his already stretched officers by refugee tents to protect the city's immigrant population. Fans believe that Frank's risky move could lead to severe repercussions for New York's police and speculate that Frank may eventually decide to willingly step down from his role as commissioner. However, it is also suggested that Frank's feud with Mayor Chase could escalate to even more precarious heights in the next season, which has been renewed by CBS. Blue Bloods season 13 airs on Fridays on CBS in the USA and the following Mondays on Sky Witness in the UK.