Complex sentence: After talking to the artist and taking the drawing, Elle and Lucas go to the Andrews farm to wait for Phil. Phil denies knowing the boy in the drawing and he hastily leaves in his truck, leaving Elle and Lucas behind.
Split into simpler sentences: After talking to the artist and taking the drawing, Elle and Lucas went to the Andrews farm to wait for Phil Andrews. Phil denied knowing the boy in the drawing and he hastily left in his truck, leaving Elle and Lucas behind.