[[Category: chapters]] "Synchro Killer!!" is the forty-forth chapter of the Yu-Gi-Oh! 5D's manga. This chapter was first printed March 21, 2013 in the 5/2013 issue of the V-Jump magazine. [[Chapter summary::Lazar unleashes a powerful anti-Synchro combo against Crow, but in response, the latter shows the true power of his new Duel Dragon. Meanwhile, Yusei and Jack reach the Skeleton Knight.| ]]Lazar unleashes a powerful anti-Synchro combo against Crow, but in response, the latter shows the true power of his new Duel Dragon. Meanwhile, Yusei and Jack reach the Skeleton Knight.