17th May - The Unicorn and the Wasp (Agatha Christie murder mystery)
24th May - Eurovison Song Contest
31th May - Silence in the Library (the Moffat two-parter)
Luckily, looks like we don't get the interruption with a cliffhanger because that would have been truly evil. Though I do wonder if we'll get a mid-season trailer like we did last year...
Side note - I suspect this may get American viewers practically caught up with the UK broadcasts.