Doctor Warthrop and Will Henry from Rick Yancey's wonderful Monstrumologist series.
I could imagine this scene perfectly because, living in the country, my windows are awash with buzzing masses of flies every fall. I think my flies crawl in through the walls, though... not out of the slowly decomposing body of a bedridden sea captain.
Upon that massive hill of steaming manure.
An anthropophagus turns his frown upside down.
Simon & Schuster canceled the series after the third book and I was pretty much ready to start making ritualistic sacrifices to the literary gods to make them change their minds, but luckily a lot of people who are far more pragmatic than me actually wrote to S&S - enough people so that the horrible order was rescinded, and there will be one more book.
Point being, the series is great. It's a horror story and a love story... and Warthrop would probably tell you there's no difference between the two.
Now go forth and buy it!
And have some more random doodles, too.