In a matter of minutes the storm looming over the city had unleashed all its fury. By mid-April and well into the month of June, the city withered in the clutches of the so-called Indian summer, with temperatures reaching up to forty degrees and a level of humidity close to saturation. But with the arrival of violent electric storms, which turned the sky into a battle scene, thermometers could plunge thirty degrees in a few moments.

The curtain of rain hid the unsteady jetties of rotten wood that dangled over the water’s edge, but Peake didn’t stop until he felt the hull hit the planks of the fishermen’s dock. Only then did he thrust the anchoring pole into the muddy riverbed and rush to extract the children, who lay wrapped in a blanket. As he took them in his arms, the crying of the babies permeated the night like a trail of blood calling out to a predator. Pressing the bundle against his chest, Peake jumped ashore.

As the rain pelted down, he saw the other boat approaching the river bank, slowly, like a funeral barge. Gripped by fear, Peake ran towards the streets bordering the southern edge of the Maidan, a district known by its privileged residents – mostly British and other Europeans – as the White Town.

He clung to one remaining hope of being able to save the children, but he was still far from the heart of North Calcutta and Aryami Bose’s house. The old lady was the only person who could help him now. Peake stopped for a moment and scanned the gloomy expanse of the Maidan, searching for the distant glow of the street lamps that flickered in the northern part of the city. The dark streets, cloaked by the storm, would be his safest hiding place. Holding the children tight, Lieutenant Peake set off again, heading east, hoping to find cover in the shadows cast by the palatial buildings of the city centre.