A Database Error Occurred

Error Number: 1064

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 's_Knights_Series/Arthur's_Knights_II_-_The_Secret_of_Merlin'' at line 1

select catid from structure where topic = 'Top/Games/Video_Games/Adventure/Graphical_Adventures/Arthur's_Knights_Series/Arthur's_Knights_II_-_The_Secret_of_Merlin'