Reword.
In order to have Cherisse take him seriously he ordered his men to kill her daughter Lifeline, Pathfinder reacted quickly sending his grapple hook at Sawtelle's chest shocking the Legends who thought Pathfinder was dead however he was just "bamboozling". From there Sawtelle's men were all captured along with Sawtelle by the Legends and local authorities.
3 answers
To make Cherisse believe him, he commanded his men to kill Lifeline, Cherisse's daughter. Reacting promptly, Pathfinder used his grapple hook on Sawtelle, stunning the Legends who believed he was dead. This was just a trick. Following that, the Legends and authorities captured Sawtelle and his crew.
Reword that again. Ay, caramba.
He gave an order to his men to kill Cherisse's daughter, Lifeline, to prove his seriousness to her. But, Pathfinder surprised everyone by using his grapple hook on Sawtelle's chest, shocking the Legends who thought he was dead. This clever move allowed the capture of Sawtelle and his men by the local authorities and the Legends.