Treme co-creators David Simon and Eric Overmyer envision their HBO series ending after 4 seasons. In an interview with on Monday, Simon revealed that he has notified HBO of their plan to have characters’ stories play out over four seasons via memo. Treme, set in post-Katrina New Orleans, has been renewed for a third season, which is now starting production. No decision has been made beyond that, but HBO is known for giving the top creators on its roster the freedom to end their series in the way they have envisioned it.