I think it needs a few good licks

SELECT * FROM gallery2 WHERE topic_id="1518927" UNION SELECT * FROM gallery2 WHERE topic_id="1513628" UNION SELECT * FROM gallery2 WHERE topic_id="355546" UNION SELECT * FROM gallery2 WHERE topic_id="1190775" UNION SELECT * FROM gallery2 WHERE topic_id="428764" UNION SELECT * FROM gallery2 WHERE topic_id="999542" UNION SELECT * FROM gallery2 WHERE topic_id="833647" UNION SELECT * FROM gallery2 WHERE topic_id="196042" UNION SELECT * FROM gallery2 WHERE topic_id="12946" UNION SELECT * FROM gallery2 WHERE topic_id="1196174" UNION SELECT * FROM gallery2 WHERE topic_id="1060547" UNION SELECT * FROM gallery2 WHERE topic_id="1199050" UNION SELECT * FROM gallery2 WHERE topic_id="1164079" UNION SELECT * FROM gallery2 WHERE topic_id="1475513" UNION SELECT * FROM gallery2 WHERE topic_id="1086741" UNION SELECT * FROM gallery2 WHERE topic_id="1579624"