I just finished researching shade plants for the north side of my house. Shrubs are hard to come by, but I did find a few interesting plants. I'm in zone 6, so I'm sure most would work in MD. Here's what I dug up:

Yews adapt to shade, come in several shapes and sizes

Summersweet (Clethra alnifolia) 3' to 4' shrub with pink or white flowers.

Winterberry (Ilex verticillata) In the Holly family. Assuming you have a male and female bush, they produce red berries for the winter months.

Ferns - Maidenhair caught my eye, but there are many varieties.

Hostas - take your pick, can't kill 'em.

Ground covers: Myrtle (vinca minor)
Sweet Violet (viola odorata)
Sweet Woodruff (galium odoratum)

Daphne - this one has very pretty foliage

Bee Balm - this one spreads a lot each year

Not a ton to choose from, but it's a start. Hope it helps.

Many rhodies (which include azaleas) should do well for you in that situation, and so would Pieris. I can't imagine that bee balm would do well in full shade. Although the front of your house is in full shade, I imagine it's what gardeners call "bright" shade, that is with no other trees shading it and open to a lawn.

Enkianthus should also do well, as would dogwoods and viburnums and forsythia, although they wouldn't bloom profusely.

In Maryland, in two houses both facing north, I had success with rhododendrons, azaleas, camelias, junipers, boxwood, and Burford hollies.