Don refuses to give up on the Father Project. He applies his scientific skills to the problem: estimating the actual number of men who remain to be tested, locating them, and figuring out how to get DNA samples. He discovers that there is a 30 year class reunion in only three weeks. He determines that they can gather DNA from the relevant men at the reunion.

He and Rosie are hired as bartenders for the reunion. Don memorizes a whole book containing mixed drink recipes. He realizes that his life is getting chaotic; he calls Claudia for advice.

Don believes that Rosie applied for the Wife Project through Gene and he doesn’t want to hurt her feelings by telling her that she’s been eliminated. Claudia encourages Don to spend time with Rosie without telling her anything about the Wife Project, because Don admits that he’s enjoying spending time with Rosie.

Gene asks to see Don at work the next day. He confronts Don about seeing Rosie, which Don had previously denied. Don avoids telling Gene about the Father Project; he’s on dangerous ground collecting DNA without people’s permission and using the university’s lab for private DNA testing.

Gene asks Don how much he knows about Rosie.