When Philip Hensher realized that he didn't know what a close friend's handwriting looked like, he felt that something essential was missing from their friendship. But does it really matter that typing and texting have largely taken the place of passionate love letters, secret diary entries and postcards home?

From the crucial role of handwriting in a child's development, to the novels of Dickens and Proust - and whether a person's writing really reveals their true personality - The Missing Ink goes in search of the stories and characters that have shaped our handwriting, and how it in turn has shaped us.