After his Crown-Point escape, Dillinger had to stay out of sight. In early April, of 1934, he and Billie drove to Moorseville where they visited John’s dad at the family’s farm in Indiana. Johnnie, who loved fast cars like the Essex Terraplane, was right when he suggested officials wouldn’t look for him in such an obvious place.
The informant network, however, was active - and frequently accurate. Billie was arrested at Chicago’s Tumble Inn, soon after the Mooresville trip, as she talked with Larry Strong about a safe place for her and John to stay.
Purvis himself was involved with her capture, but neither he nor his agents searched any of the cars in front of the bar. If they had, they’d have seen Dillinger (waiting for Billie) and Pat Cherrington (Billie’s friend) sitting in a car, right in front of the Tumble Inn.
Because there were so many agents surrounding the bar, Johnnie could do nothing to help Billie. She was ultimately transferred to St. Paul (Minnesota) where she was charged with harboring a fugitive. Johnnie paid for her defense, but Billie was convicted and given a two-year sentence.
Dillinger, meanwhile, was making plans to remain out of public view (at a resort in Manitowish Waters, Wisconsin) and to have plastic surgery to change his appearance. Among other things, he wanted to remove a significant identifying facial feature - a dimple on his chin.
In late April, while snow was still on the ground in parts of northern Wisconsin, Johnnie (now with his hair dyed red) and his gang members traveled to the Little Bohemia resort. Another notorious gangster - Baby Face Nelson - met them there.
Located in a remote lake area, the resort was a perfect place to rest and hide - so long as no one tipped-off Purvis. Nan Wanatka, who owned the Little Bohemia with her husband, soon became concerned about their guests. Who were these men? Were they gangsters?
After Emil, her husband, correctly guessed one of the men was Dillinger, Nan wanted to call-in the authorities. She wrote a note to her brother-in-law and slipped it inside a cigarette pack. A local fishing guide, pretending he’d left his cigarettes at home, borrowed the pack of cigarettes from Nan. The guide, actually Nan’s brother, delivered the note to its intended recipient - Henry Voss.
Voss contacted Purvis who quickly gathered whatever forces he could on short notice. They’d have to fly into Rhinelander, about fifty miles away from Manitowish. (He chartered a Northwest Airways plane for 35-cents-per-mile.) Another group of agents would fly in to Duluth. No one bothered to call local police forces or to coordinate efforts with anyone who really knew the north-Wisconsin area.
The federal agents arrived at the Little Bohemia on April 23rd - a Sunday night - without a plan of attack. Never before had the Bureau of Investigation attempted a raid quite like this one, and no one bothered to set up roadblocks. None of the participating agents had been trained for massed gunfights, and everyone present knew the Bureau had a bad gunfight-record. They also knew the gangsters were deadly shots.
As they drove into the resort with their car lights off, the agents heard barking dogs. Purvis and his men hadn’t known about Nan’s dogs - two collies named Shadow and Prince. Perhaps they also hadn’t expected other customers to be at the resort’s bar. When three of those customers left in their car, without knowing there were federal agents lying-in-wait, only two survived the ensuing gunfire.
Dillinger, and his gang members, were able to escape through the inn's rear window, forced to leave some of their weapons behind. Under the cover of night, they made it safely to the resort's beach.
Purvis, however, firmly believed that he and his agents had the gangsters surrounded. He continued to believe that misguided notion until daylight revealed the truth.
A total of three people were dead, including Agent Carter Baum (who originally went for help, in a Ford coupe, but was killed by Baby Face Nelson at a nearby home owned by the Alvin Koerner family). Dillinger, however, had disappeared. As Bryan Burrough observers in his book, Public Enemies:
...it was the fourth time in twenty-three days agents had been within a baseball’s toss of Dillinger without capturing him. (Burrough, Public Enemies, page 308.)
Newspapers around the country referred to the disaster as the Battle at Little Bohemia (click on "Little Bohemia"). The Bureau was utterly embarrassed, and Hoover was furious. He appointed another special agent, Sam Cowley, to take control of the Chicago office (where Mel Purvis was now second-in-command).
Johnnie, himself, decided it was a good time to finally have that plastic surgery.