Transformers Vol 1 #57 (NM)

Megatron, who blew himself up back in issue #25, is back and has Ratchet prisoner in the Ark while Optimus Prime realizes that the attack on the air base was a ruse.

And how did Megatraon survive that explosion?

Find out in The Resurrection Gambit. 

Issue also has profile pages on Overkill and Slugfest Decepticons and Cloudraker Autobot.