Mystery Flower!

Embee called me out to the garden last night just as it was dusk to have a look at these flowers. They were tucked under some other foliage and I hadn't noticed them. Embee cannot remember planting them~ well he did say he thought he might have planted some Snowdrops last year so we think these might be a variety of Snowdrop. I haven't had time to do any research just yet so if anyone has any ideas please let me know!