Question: will there be a season 4 of the strain

Answer: Yes, On August 6, 2014, FX renewed The Strain for a 13-episode second season which premiered on July 12, 2015. On August 7, 2015, FX renewed The Strain for a 10-episode third season which premiered on August 28, 2016. FX renewed the series for a fourth and final season on September 27, 2016, which premiered on July 16, 2017. During the course of the series, 46 episodes of The Strain aired over four seasons.