 Harley talks Leah into stopping by and going with Daisy to the school dance, but neither Leah or Daisy warm to each other and Leah ends up leaving Harley s angry. Daisy wants to stay home, but Gus will not let her. He agrees to be her escort to the dance, but not go in with her. Frank tells Marina that ballistics linked the gun used in Alan s shooting to a special type of gun. The only person in Springfield with that type of gun on registration is Joshua Lewis! Frank heads to Cassie s to talk to her and Josh. Billy and Reva talk about what it means for Josh to be marrying Cassie. Reva is still stunned, but admits that she brought this on herself by pushing the two of them together in the first place. Billy realizes that Reva thought that her and Josh would fall back together eventually. Reva is determined to get on with her life and vows not to let the wedding destroy her future. Tammy appears again to Cassie to say goodbye. Cassie does not want her to go, but Tammy says she will see her mother at the wedding and makes Cassie promise to live a happy life. When Cassie does, Tammy vanishes. Daisy can not bring herself to go into the dance. She ends up spending the evening with Gus eating pizza and talking about life. Gus is trying to be good to her, but Daisy is falling for her mother s husband! Will Daisy try to come between Gus and Harley? Frank brings Cassie to the police station to talk about evidence they found regarding Alan s shooting. When Marina see s her dad with Cassie, she calls Josh. Josh comes to Cassie s aid at the police station. Harley goes to Towers to check on the kids at the dance and runs into Dylan who has just returned to town. She is so glad to see him and tells him that she needs his help with their daughter. Dylan admits to Harley that, although Peter is fine, he and Bridget are in the process of divorcing. On a good note, he tells her that now he can spend more time in Springfield and help her with Daisy. The two reminisce about their past. Marina double checks security footage from the surrounding buildings during Alan s shooting. She shares her findings with Frank. Before Josh and Cassie can leave the police station, Frank stops them. He has new evidence in the case implicating them in Alan s shooting. Frank plays the security footage that shows Cassie disposing of a gun!