Tradecraft

It’s a thin line between spying and meddling. And it’s one that's only faintly drawn in the manual once given to new undercover police officers - written by a familiar name.Read Cara’s notebook: www.telegraph.co.uk/bedoflies Sign up to our most popular newsletter, From the Editor. Look forward to receiving free-thinking comment and the day's biggest stories, every morning. telegraph.co.uk/fromtheeditorGet in touch: [email protected] and on Twitter @cjmcgoogan Hosted on Acast. See acast.com/privacy for more information.