<P> Worried about her and Mike's relationship, Katherine tells him that her daughter wants her to move to Maryland, but isn't sure if she should go . Mike was non-committal but realized, thanks to Dave Williams (AKA David Dash), that he was falling in love with Katherine and left her a basket of roses with a note saying "Don't go". When Katherine found them, she was thrilled--unaware that Dave had an agenda of his own, thinking Mike was responsible for the deaths of his wife and daughter . Dave planned his revenge--he, Mike and Katherine would go camping and he would shoot Katherine dead . Fortunately, Dave's wife, Edie, sent him a text, telling him to come home . Edie confronts him--during the confrontation, Edie is about to call Mike when Dave nearly strangles her . Edie rushed out and was killed after being electrocuted when she crashed her car into an electricity pole after swerving to avoid Orson . Dave later learns that he nearly killed the wrong person . Susan confessed she was driving the night that Lila and Paige died and realized he should have been targeting her . Dave decides to kill Susan and Mike's six - year - old son, M.J. Delfino, in revenge . </P> <P> Mike later struggled with his feelings for Susan and Katherine, and proposes to Katherine, who gladly accepts . In the finale, Dave gives Mike a videotape which he says is rehearsal footage of their band; it is actually Dave's confession which Mike wasn't supposed to see until after M.J. is dead . Needing a videotape to use at the wedding, Katherine puts it in her camera . Katherine and Mike are waiting to fly to Vegas and Katherine takes her wallet to buy cappuccinos and knocked the camera so Mike heard Dave's voice from her purse . Watching it, he sees Dave confess to killing M.J. . Mike runs to save him, and asks a passenger to inform Katherine that he left due to an emergency . Unfortunately, it is misinterpreted . Mike phones Susan and told her that Dave is the man whose wife and daughter that died in the accident . He speaks to Dave, offering himself in Susan and M.J.'s place . Dave agrees and tells Mike to meet them at the site of the accident . Unknown to Mike, Dave plans to have Mike crash into his car and kill M.J., just as Susan did when she killed Lila and Paige . Susan manages to escape and tried to warn Mike, but he crashed into Dave's car anyway . Susan was relieved to find M.J. alive as Dave had told him to get out of the car . Susan, Mike, and M.J. share a hug, and Mike kisses Susan . </P> <P> At the end of the finale, Mike is seen marrying someone whose face is not shown . </P> <P> It is revealed that Mike broke up with Katherine and asked Susan to marry him, again . She accepts and they plan their wedding . Her daughter, Julie, then returns to Wisteria Lane . Though Susan is happy and in love with Mike, Katherine is devastated and jealous . Their friendship is deeply scarred by this . At the ceremony, Katherine approaches Susan and explains how she feels and asks for her to make a public apology during the ceremony or she will make a huge scene . Susan then locks Katherine in a closet, she breaks out and a scene ensues after Mike and Susan are wed . Susan then apologizes publicly . However, Katherine tells her it doesn't matter because as of this moment, they are at war and she begins to plot revenge . When Katherine tells M.J. how Susan stole Mike away and takes the child from school, Mike verbally blasts her, saying he never loved Katherine and was thinking of Susan the whole time they were together . When a hurt Katherine says it'd be less painful for Mike to stab her with a knife, he retorts that he doesn't care enough about Katherine to kill her . After he leaves, Katherine calls 911 to say she's losing blood and then stabs herself . Katherine tells the police that Mike stabbed her and he's arrested . Trying to help him, Susan calls on Katherine's daughter Dylan, who's believed Katherine's tales that she's married to Mike . After talking to Mike in jail, Dylan realizes her mother has been lying and confronts her, causing Katherine to have a full breakdown that presumably exonerates Mike . Mike is currently having financial problems, but while he refuses any help coming from Susan, he takes a loan from Carlos . Susan eventually learns of their financial ruin and, after going over their finances she and Mike realize they need to cut back . This includes them moving to an apartment across town and, renting out their home . Though Mike knows it will help them get back on their feet, Susan becomes very angry with him as she is forced to leave the house where she raised her children . Though they make up and leave Wisteria Lane, they quickly find a renter for their house . The renter is an old resident of Wisteria Lane, Paul Young . </P>

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