Issue · Marvel Comics X-Men (2013) #20: Exogenous Part 3 Released Oct 1, 2014 USD $3.99 32 pages InkerCraig Yeung EditorDaniel Ketchum PencillerDexter Soy LettererJoe Caramagna Next in X-Men (2013) #21 · Exogenous Part 4 Nov 5, 2014 #22 · Exogenous Conclusion Dec 10, 2014 #23 · The Burning World Part 1 Jan 7, 2015 #24 · The Burning World Part 2 Feb 11, 2015