When does Grim & Evil return?

The Grim Adventures of Billy & Mandy deals with the adventures of Billy and Mandy. Evil Con Carne is a series about an aspiring dictator obsessed with taking over the world. The show premiered its run on August 24, 2001, on Cartoon Network, and ended its first 13-episode run on October 18, 2002.
The Grim Adventures of Billy & Mandy is a series about two neighborhood kids, moronic yet enthusiastic Billy and emotionless Mandy. The Grim Reaper is over 137,000 years old (as his early childhood took place during the Stone Age) and speaks with a Jamaican accent. Mandy (voiced by Grey DeLisle) is a girl about Billy's age who has a morbid, cynical and merciless attitude. Hector Con Carne is an aspiring dictator obsessed with taking over the world.