They arrest him , but are unable to make the charges stick due to a clerical error by Stuckey .
With the help of CSU technician Dale Stuckey , Benson and Stabler discover that a deranged former artist ( Nick Stahl ) was at the park during the crime .
They arrest Stabler , but are unable to make the charges stick due to a clerical error by technician .
With the help of CSU technician Dale Stuckey , Benson and Stabler discover that a deranged former artist ( Nick Stahl ) was at the park during the crime .