Complex sentence: Ross Martin broke his leg in a fourth season episode, "The Night of the Avaricious Actuary", and suffered a heart attack a few weeks later after completing "The Night of Fire and Brimstone".
Split into simpler sentences: Ross Martin broke his leg in a fourth season episode, "The Night of the Avaricious Actuary". He suffered a heart attack a few weeks later, after completing "The Night of Fire and Brimstone".