4x05 "Greening Pains" — Episode 42

D'avin, Johnny, and Dutch must use their Killjoy skills to obtain
something they need to save Delle Seyah, D'avin, and Aneela's
child. Meanwhile, on the RAC-commandeered Hullen ship, Turin gets
to know his new rebooted Hullen friend Weej while they try to
figure out what's happening with the other Hullen.