Complex sentence: Before he could do this, however, Harvey took control of Crichton's mind and body, tried to send a signal to Scorpius, and escaped in John's Farscape One module.
Split into simpler sentences: Before he could do this, however, Harvey took control of Crichton's mind and body. After failing to send a signal to Scorpius, Harvey-controlled Crichton escaped in John's Farscape One module.