I can't believe it, but Cain produced a second volume of Mockingbird that's even better than the first. That's in large part because this three-issue story is funny. No, it's hilarious. It's all about a nerd cruise, and her nerd jokes are all the best. 
 But, this storyline also continues to use terrific sidebars such as flow charts, hand signals, drink preferences, and more. And, it's a terrific mystery. Oh, I'm not sure that the mystery pays out in a "fair" way like a traditional mystery should, but nonetheless it's a great basis for the story. 
 Overall, this comic was gone far, far too soon. I hope we see Chelsea Cain back in the comic biz. (Though that seems somewhat in question since Cain was assaulted on the 'net by MRAs, PUAs, and other arrested adolescents after the cover of her last issue dared to mock "feminist agendas"; go show those juveniles by reading her two terrific Mockingbird volumes.) 
 PS: Be warned that there are just 3 new issues in this $16 collection; obviously, Marvel cancelled the series very suddenly, as they're usually able to plot out their collections better than that.