The next time we see Martin, he's running around Zenith and saving lives and acting like a hotshot doctor. Turns out that Angus Duer from his medical school is also working there.
Along the way, he saves a few people from disgrace and turns down a few bribes to keep things quiet. When he thinks about it later, though, he wishes he'd taken some of the bribes.
Martin really makes a name for himself during a flood where he risks his life to save five children from drowning. The guy is a hero in Zenith after that.
Through all of this, though, he becomes homesick for his old lab with Doctor Gottlieb. Some part of him wishes he could just put his head down and do research.
While Martin and Leora are out walking one day, they pass Gottlieb, who looks like a total wreck. They only say a few words to one another, but seeing Gottlieb makes Martin start thinking about him and his research again.
Later on, Martin finishes his internship and moves with Leora to South Dakota to begin his career.