Complex sentence: Laing plays the demon in flashbacks depicting musician Robert Johnson selling his soul to learn to play the guitar, while Sousa portrays the demon in the present after she is summoned by Dean in an attempt to rescue a man from a demonic pact previously made.
Split into simpler sentences: Laing plays the demon in flashbacks depicting musician Robert Johnson selling his soul to learn to play the guitar, while Sousa portrays the demon in the present. The latter is summoned by Dean in an attempt to rescue a man from a demonic pact previously made.