Severus always loved immersing himself in brewing potions, often forgetting to eat. When Lord Voldemort went out to work, the house-elf could never persuade him to stop.
Normally, only Lord Voldemort could persuade the dedicated Potions Master to step away from his beloved potions laboratory.
But this time, it was clearly going too far. This was a new potion designed to assist with Animagus transformations by heightening the ability to perceive a second heartbeat. Not everyone possessed such exceptional Transfiguration talent that they could sense a second heartbeat while weathering a storm.
Chapter 216