In which a mysterious and deadly sickness stealthily spreads to the tropical island of St. Hubert, where local politics and complacency impede recognition of the threat, and the rat population flourishes unchecked amid the steamy, sun-drenched town. The island’s social tapestry, from the weary Governor to the contentious legislators and the habitués of the Ice House bar, quietly braces against an unseen menace that stirs unease beneath its outward placidity.

In which Martin Arrowsmith, steadfast in his scientific toil amid institutional upheaval, pursues groundbreaking research on phage treatment for pneumonia and plague, confronting both the chaos of leadership changes and the eccentricities of his colleagues. With the unexpected arrival of the irrepressible Gustaf Sondelius as his aide, Arrowsmith navigates the rigours of experimental medicine while the Institute around him flounders in a swirl of intrigue and ambition.

In which a young bacteriologist’s discovery attracts the eager attention of influential scientists, prompting offers of honour, department leadership, and societal acclaim that both dazzle and unsettle him. Yet amid the clatter of success and expectation, he learns that another has already published the key finding, leading him to reckon quietly with the true nature of scientific work and personal ambition.

In which Martin Arrowsmith embarks tentatively on his scientific investigations at the McGurk Institute, navigating the rigours of research and the intrigues of its eccentric staff amidst the backdrop of the Great War, all the while confronting the demands of mathematics and the pangs of patriotism. The episode paints a quietly observant tableau of ambition, camaraderie, and the uneasy melding of science with the tumult of the larger world, as Martin strives to find his place both in the laboratory and in the vexed society around him.

In which Captain Martin Arrowsmith, burdened by weariness and doubt, makes an unexpected discovery about a mysterious principle in staphylococcus-infected pus that arrests bacterial growth, setting him upon a fervent path of rigorous experimentation and cautious hope. Yet this scientific triumph entangles him in relentless toil and creeping neurasthenia, undercut by the skeptical vigilance of his mentor and the fragile solace of his devoted wife.

In which Martin Arrowsmith arrives at the McGurk Institute in New York, awestruck by its grandeur and plunged into the vibrant, exacting life of scientific research under the critical eye of Max Gottlieb and the watchful director, Dr. Tubbs. Amidst the clash of personalities, the bustle of a devoted staff, and the lure of groundbreaking work, he finds a home for his restless curiosity, balanced by the warm steadiness of Leora and the inspiring camaraderie of new friends.

In which Martin Arrowsmith endures a year of mechanical routine at the prestigious Rouncefield Clinic, where his scientific curiosity is stifled by the practical demands and polished socialities of established medical professionals. Amidst this, he and Leora nurture their relationship with tender solidity, while Martin wrestles with his restless ambition and the vexing presence of “men of measured merriment.”

In which Martin Arrowsmith, newly appointed Director of Public Health, wrestles with the burdens of bureaucracy, local politics, and scientific inquiry while striving to reform a beleaguered department amid rising opposition and personal strain. His earnest laboratory discoveries and efforts to uphold public welfare collide with the social and political machinations of Nautilus, culminating in a poignant reckoning with the limits of idealism in a pragmatic world.

In which the town of Nautilus is stirred to a fever pitch by Dr. Pickerbaugh’s grand Health Fair, a spectacle of earnest displays and earnester controversies that sets the stage for a dazzling yet precarious rise to local glory. Amid the chaos of public praise, pungent rivalry, and the smoke of literal and figurative fires, appointments and ambitions intertwine, revealing the delicate dance of earnestness and expediency in small-town politics.

In which the industrious town of Nautilus embraces a series of exuberant and sometimes curious public health campaigns led by the spirited Almus Pickerbaugh, whose fervent methods both inspire and vex his assistant, Martin Arrowsmith. Amidst the whirl of these civic crusades, Martin wrestles with his own restless heart and moral uncertainties, as he navigates the shifting tides of affection and ambition in the quiet moments between his demanding laboratory work and the vibrant life beyond.