Sensing Biff's confusion, the Chief was already speaking, "professor ... chairman of department ... sprawled face-down ... University Squash Courts ... gassed ... squash ball soaked in chemical ... gave off 'noxious vapors when warmed,' the doc says..."

Bundie shoved the piece of green and white paper back into his pocket. "The whole thing was too overpowering," he thought. "Two murders, a mysterious phone call, a man with a gun." Suddenly the Chief rose from his desk, snapping Biff out of his reverie.

"I'm going back to search the locker room. Bundie, come with me."

The two lawmen walked briskly out of Grays Hall and across Mass. Ave. Turning down Linden Street, they noticed that a large crowd had gathered in front of the Squash Courts. An ambulance was parked at the curb, and two attendants were carrying out the body. The Chief stopped the stretcher before it reached the ambulance and lifted one corner of the sheet. Biff blanched. The corpse was an unusually livid color and the face was twisted into a macabre grimace. Bundie swallowed hard and followed the Chief into the building.

A quick, but thorough, search of the deceased's locker afforded no further clues, and the Chief departed, leaving Bundie with orders to wait in the locker room until the Chief could find a replacement. Feeling not a little nervous, Biff paced slowly back and forth between the long rows of lockers.

"Two murders in one day," Bundie said half-aloud, echoing the Chief's words. "Two murders in one day." With an absent-minded kick, Bundie sent a stray piece of paper flying. Suddenly his heart leaped to his throat: the paper was identical to the one he had found inside the package the sinister foreigner had given him by mistake! Like some great spark plug, Bundie's mind flashed. Swiftly, he recounted the day's events to himself, "The circle with the Roman numeral seven in it was stamped on the sole of the foot of the other corpse. There must be a connection!"

Disregarding the Chief's orders, Bundie picked up the card and' raced out of the Squash Courts and onto Linden Street. As he reached Mass. Ave., he collided smartly with a thickly bespectacled student.

"Look out where you're going!" yelled the myopic young man.

"Overprivileged Harvard students!" muttered Biff as he took off once again for Police Headquarters.

As he entered the Yard, Bundie spotted the Chief walking up the steps of Grays Hall. "Chief! Chief! I've found a clue!" he barely managed to gasp.

"What is it, Bundie? Stop babbling and tell me what you've found."

Biff pulled out the card and showed it to the Chief, who silently took it and examined it carefully. "Nice work Bundie."

Biff smiled and the Chief went on. "We've identified the Mallinckrodt victim: another professor. This one also the chairman of his department. We also discovered that they both had large gambling debts."

Bundie let out a low whistle. "Gambling debts," he said. "Now we're really getting into big-time crime."

For the next ten minutes, Bundie and the Chief stood on the steps, and Biff related his escapade with the Bronze Rhinoceros. Finally Bundie handed the Chief the sheet of green and white paper which the stranger had left for him.