Robbery, but he didn't do it.
O. Henry, whose real name was William Sydney Porter, moved to Texas in the 1880s to escape a legal matter in North Carolina. He chose to settle in Texas, particularly in Austin and then in Houston, where he started his writing career and gained inspiration for many of his famous short stories.
O. Henry O. Henry
Without quoting California Penal Code Section 31, elements that would directly make one a principal to a crime, would be the direct involvement to committing a crime, or the direct involvement to aiding or abetting a crime by advice, coercion or counsel whether or not they are actually present.

 The Elements: o Planning o Preparation o And Carrying out the offense
O. Henry was born on September 11, 1862.
O Crime do Padre Amaro was created in 1875.
O Crime de Cravinhos was created in 1920.
he was in l-o-v-e with the princess. first comes love, then comes your love getting eaten by tiger (in my opinion). But the answer is he fell in love with the princess :)
Henry O. Pollak was born in 1927.
The duration of A Lei e o Crime is 3600.0 seconds.
O. Henry was born on September 11, 1862.
O. Henry Award was created in 1919.
O. Henry Hall was created in 1881.