"Dark Knight Rises by David Sharp, via Behance. -- like a reverse bat signal, Gordon knows Batman is out because he scares the bats out of the cave and Gordon sees them against the moon? If not in this story, in another one.
Here's an incredibly cool poster for Tim Burton's classic Batman film. The illustration was created by Matt Ferguson for Bottleneck Gallery. It's been awhile since I've seen this movie, but seeing this poster print has inspired me to watch it again!