I love the work that the team at PHLEARN does. If you're lacking in inspiration, these guys can really help get you back on your legs. Today they released a new behind-the-scenes how-to with the purpose of teaching how to master mood using a film noir concept as the catalyst.
You really should read more about this shoot (very detailed) at PHLEARN. If you want to really get a lot more information on a wide range of photo topics, you should consider their Pro Tutorials.