Complex sentence: Reynolds, now even more bitter as he suspects Mallory of betraying them, notices the normally aggressive Maria talking friendly to Mallory outside Broznik's hut, a short while later they descover Saunders murdered and his radio smashed.
Split into simpler sentences: Reynolds, now even more bitter as he suspects Mallory of betraying them, notices the normally aggressive Maria talking to Mallory outside Broznik's hut as if they were friends. A short while later, they descover Saunders murdered and his radio smashed.