Watch Harriet the Spy: Blog Wars (2010) HD Full Movie Free on SolarMovie. Watch Harriet the Spy: Blog Wars (2010) online free. Young spy Harriet Welsch crosses paths with popular student Marion Hawthorne as the two girls vie to...Young spy Harriet Welsch crosses paths with popular student Marion Hawthorne as the two girls vie to become the official blogger of their high school class.