Shimson had left his Philistine wife with her father. He later went to reclaim her, only to find that the father had given her away to another man. Since she was not divorced from Samson, this was blatant adultery, tacitly sanctioned by the local Philistine community in violation of the Sheva mitzvos Bnei Noach. Shimshon tied foxes together by the tails with torches and let them loose through the Philistines' fields, burning down their crops. When the Philistines heard of this, they burned the adulterous woman and her father. Samson reprimanded them that that's what should have been done in the first place.
The Bnei Yeudah were concerned that Shimson's trouble with the Philistines would come back to bite them. He allowed them to arrest him and to turn him over to the Philistines, but when they handed him over, he broke his bonds, grabbed a donkey's jawbone and killed 1,000 of the enemy troops.
Shimshon's end comes in Perek 16 where he falls for Delilah and let's her in on the secret to his strength. She turns on him and turns him in to the Philistines who knock out his eyes. During a Philistine celebration where he is brought up to be mocked, Shimshon's strength is returned to him by Hashem in order to deliver a final crushing blow to the Philistines. He rules for 20 years.