The action gospel — short, urgent, and straightway to the point.
"With men it is impossible, but not with God: for with God all things are ______."
Mark is the shortest gospel and the fastest — the KJV uses 'straightway' and 'immediately' over forty times. Everything happens now.
Early church tradition says Mark wrote down the preaching of Peter — making this gospel, in effect, Peter's memoirs in someone else's handwriting.
More than a third of Mark — six of sixteen chapters — covers just the final week of Jesus' life. Mark knew where the story was heading.
A young man flees the arrest scene in Gethsemane leaving his garment behind — found only in Mark 14. Many believe it's the author's unsigned cameo.