Cas Anvar is one of the core cast members of the hit scifi show The Expanse. After 3 seasons on SyFy, the shows future seemed in doubt as it was not picked up for a 4th season. After a massively succesful campaign by the fans of the show, it was eventually picked up by Amazon for a 4th season. Cas talks with us about the show, his character Alex Kamal, and what to expect for season 4.