This is book number 7 in the Last Man series.
In addition to catching up on the adventures of Yorick's monkey Ampersand (whose body holds the key to stopping the male-killing plague) and telling the origin of Agent 355, PAPER DOLLS chronicles Yorick and 355's search for Yorick's fiancee Beth in Australia a search that yields a large dose of unwanted publicity for the Last Man, and deadly consequences for those he cares for Collects issues #37-42 of the runaway hit Vertigo series by Brian K. Vaughan (EX-MACHINA, ASTONISHING X-MEN, RUNAWAYS) and Pia Guerra.