Complex sentence: Other radio performances included his being featured in the audition of the "Suspense" series; the episode was "The Lodger," directed by Alfred Hitchcock within a program called "Forecast" in 22 July 1940.
Split into simpler sentences: Other radio performances included a guest role on the first audition show of the "Suspense" series, which initially was broadcast as a part of the summer series, "Forecast". The episode he appeared in was "The Lodger," directed by Alfred Hitchcock, on 22 July 1940.