February's roundup of Cool & New Books includes the third book in the Infinity Ring series, THE TRAP DOOR by Lisa McMann, in which Dak, Sera and Riq return to the USA with a problem on their hands --- the SQ has taken control of the Underground Railroad from within; the second book in Mike Lupica's Game Changers series, PLAY MAKERS where there's a new point guard in town and Ben must fight for his starting position on the basketball court; and Chris Rylander's THE FOURTH STALL PART III, in which Mac and Vince think they can take a break, but that was before things at their middle school start to go haywire.