Inside police HQ Harley uses various items stored there like land mines and road flares in order to out wit both Savant and Deadshot (she's so bad ass!) and get the drop on them both (but not at the same time). Outside King Shark and Lime n' Light try to make good their escape but Lime is injured by police fire and is captured. She attempts to spill her guts about the Squad to the authorities and Queen Waller basically says off with her head and detonates her nano bomb http://insidepulse.com/wp-content/uploads/2012/03/SuicideSquad_7_011.jpg
During a flash back sequence we see Harley completely go around the bend when she realizes her supervisor has been stealing her research while at the same time chastising her emotional connection to the Joker. Harley helps the Joker escape Arkham and in return Joker takes her for a chemical swim "birthday" (indoctrination) which explains her "skin condition" http://insidepulse.com/2012/03/15/dc-comics-relaunch-what-is-harley-quinns-new-origin-how-does-her-new-look-tie-in/
Back in real time Harley has Deadshot tied to a chair in some kind of bizarre psychological ritual that involves her making Lawton wear the Joker's face in order to give her the illusion of being reunited with her lover. But little does she suspect that Lawton has worked one of his hands free and goes for a miniature double barrel single shot gun hidden in the heel of his boots. He then shoots her in the gut which brings their little role playing game to an abrupt end http://insidepulse.com/wp-content/uploads/2012/03/SuicideSquad_7_021.jpg So ends that issue which leaves the Squad with a body missing a head, Harley in critical condition and Yo-Yo presumably still inside King Shark since we don't get to see him in this issue. If you haven't read the issue you can refer to the previous posting to read at least a portion of it online and I'll post links as I find them to other online pages for this issue.