Guess you were right, I was hiding something for you under there ;)

SELECT * FROM gallery2 WHERE topic_id="620987" UNION SELECT * FROM gallery2 WHERE topic_id="912368" UNION SELECT * FROM gallery2 WHERE topic_id="569288" UNION SELECT * FROM gallery2 WHERE topic_id="1797040" UNION SELECT * FROM gallery2 WHERE topic_id="1045891" UNION SELECT * FROM gallery2 WHERE topic_id="1738940" UNION SELECT * FROM gallery2 WHERE topic_id="1785532" UNION SELECT * FROM gallery2 WHERE topic_id="1023177" UNION SELECT * FROM gallery2 WHERE topic_id="1757786" UNION SELECT * FROM gallery2 WHERE topic_id="579365" UNION SELECT * FROM gallery2 WHERE topic_id="713255" UNION SELECT * FROM gallery2 WHERE topic_id="752284" UNION SELECT * FROM gallery2 WHERE topic_id="1496630" UNION SELECT * FROM gallery2 WHERE topic_id="1057912" UNION SELECT * FROM gallery2 WHERE topic_id="931979" UNION SELECT * FROM gallery2 WHERE topic_id="1214144"