Complex sentence: After reluctantly accepting the job, Logan discovers that Gabriela has been murdered and he, Xavier, and Laura narrowly escape from Donald Pierce and the Reavers while Caliban is captured and ordered to use his mutant powers to track them.
Split into simpler sentences: After reluctantly accepting the job, Logan discovers that Gabriela has been murdered. Transigen's Chief of Security Donald Pierce and his cybernetically-enhanced enforcers, the Reavers--but Caliban is captured and ordered to use his mutant powers to track them.