Movie Review: Mystery Team (2009)
Synopsis: Three friends formed a mystery-solving team when they were kids and, now 18, are still together and still solving child-like cases. Eager to prove they are capable of doing more, they allow a young girl to hire them and begin investigating a double homicide involving her parents. However, because of their cluelessness, they may be in over their heads.
You can read the review here: Movie Review: Mystery Team (2009) (wizzley.com)