Complex sentence: Her second appearance was in 1964, in the episode "Night Call", portraying a difficult, lonely old lady who is besieged by late night phone calls, which she learns too late are from the ghost of her long-dead fiancée.
Split into simpler sentences: Her second appearance was in 1964, in the episode "Night Call". Here she plays an old lady who is besieged by late night phone calls from the ghost of her long-dead fiancée.