Watch Treehouse Hostage (1999) HD Full Movie Free on SolarMovie. Watch Treehouse Hostage (1999) online free. Timmy is a bright boy but a lousy student. His teacher, Mrs. Stevens, has threatened to fail him. Wh...Timmy is a bright boy but a lousy student. His teacher, Mrs. Stevens, has threatened to fail him. While he is supposed to be working on a current events project, he captures an escaped convict and holds the man hostage in his tree-house.