By a coincidence Sámr and Þorbjörn meet Þorkell Þjóstarsson, a young adventurer from Vestfirðir (Westfjords). He sympathises with their cause and helps them achieve the support of his brother Þorgeirr, a powerful chieftain. With Þorgeirr's support Sámr competently prosecutes the case. The law finds Hrafnkell guilty, and he rides home to Aðalból. Sámr now has the right to kill Hrafnkell and confiscate his property. One early morning Sámr, supported by Þorgeirr and Þorkell, arrives at Aðalból, surprising and capturing Hrafnkell while he sleeps.