Iron Man 4 star Robert Downey Jr. is coming back to the small screen after 15 years.

The actor is reportedly in talks with True Detective creator Nic Pizzolatto to do an HBO short series. The duo will reboot the 1960s legal drama Perry Mason, which is one of the longest-running legal dramas on television at the time. Mason is an unorthodox Los Angeles investigator and criminal defense lawyer. Each episode of Perry Mason featured one of his clients’ murder trial.

Pizzolatto wrote the script for the two seasons of True Detective. Matthew McConaughey-starred Season 1 was highly acclaimed and even won several Emmy awards. The second installment, however, received mediocre reviews from critics.

Perry Mason’s reboot will be the first TV role for Downey Jr. since he left Ally McBeal in 2001. RDJ’s role as Ally’s boyfriend in the hit show gave him a Golden Globe Award and a Screen Actors’ Guild award. The actor left the show after he was arrested for drug offences.

Downey Jr. is currently busy reprising his role as Iron Man/Tony Stark in the upcoming Marvel movie Spiderman Homecoming. BBC noted that it has also been announced that he will star in a third Sherlock Holmes film. According to Deadline, the future seasons of Perry Mason’s reboot will be dependent on Downey Jr’s availability.

Meanwhile, a female lead will be featured in the Iron Man comic books. However, there is no official confirmation as of yet if she will also appear in Iron Man 4, if there will be any. There has been no word from Marvel if there will be an Iron Man 4 or if RDJ will star in the movie. The actor has not yet settled on a deal with Marvel to do Iron Man 4.

Many believe that RDJ can still play the superhero one more time before passing on the suit. However, there are also speculations that Tony Stark will be killed off in the upcoming Spiderman movie. Apparently, this is to pave the way for the introduction of Riri Williams, the new comic book Iron Man.

Stay tuned for more Robert Downey Jr. and Iron Man 4 news here.