E-book exclusive extras:
Christie biographer Charles Osborne's essay on At Bertram's Hotel; "The Marples": the complete guide to all the cases of crime literature's foremost female detective.

When Jane Marple comes up from the country for a holiday in London, she finds what she’s looking for at Bertram’s: a restored London hotel with traditional decor, impeccable service -- and an unmistakable atmosphere of danger behind the highly polished veneer. Yet not even Miss Marple can foresee the violent chain of events set in motion when an eccentric guest makes his way to the airport on the wrong day…