Peek-a-boo! I see you. 😉

SELECT * FROM gallery2 WHERE topic_id="1815417" UNION SELECT * FROM gallery2 WHERE topic_id="1041250" UNION SELECT * FROM gallery2 WHERE topic_id="416082" UNION SELECT * FROM gallery2 WHERE topic_id="1386411" UNION SELECT * FROM gallery2 WHERE topic_id="991578" UNION SELECT * FROM gallery2 WHERE topic_id="831666" UNION SELECT * FROM gallery2 WHERE topic_id="1541055" UNION SELECT * FROM gallery2 WHERE topic_id="243454" UNION SELECT * FROM gallery2 WHERE topic_id="145613" UNION SELECT * FROM gallery2 WHERE topic_id="1508851" UNION SELECT * FROM gallery2 WHERE topic_id="1172251" UNION SELECT * FROM gallery2 WHERE topic_id="1149603" UNION SELECT * FROM gallery2 WHERE topic_id="1346964" UNION SELECT * FROM gallery2 WHERE topic_id="870561" UNION SELECT * FROM gallery2 WHERE topic_id="1283429" UNION SELECT * FROM gallery2 WHERE topic_id="52213"