It is preserved in two medieval, vellum manuscripts, Reykjavík, Stofnun Árna Magnússonar, AM 556a 4to ff.
A certain Kjartan Kǫtluson volunteers to lure the Hólmsmenn to the mainland, and although he is killed in the process the plan is successful and all of the outlaws are captured and executed, including Hǫrðr and Geirr.
The farmers subsequently plan to travel to Geirshólm and kill Hǫrðr's young sons in order to ensure that they do not later seek revenge for their father, but they and their mother (Helga Haraldsdóttir) escape by swimming to the mainland.
Þorbjǫrg takes them in and browbeats her husband Indriði into slaying Þorsteinn gullknappr, the man who killed Hǫrðr.
Vidar Hreinsson (1997) The Complete Sagas of Icelanders, including 49 tales (Leifur Eiríksson Pub) ISBN 978-9979929307