Lost Her Marbles

Lost Her Marbles is the second caper of the Thieves' guild which is only completable after the quest (Buyers and Cellars) and the first caper (From Tiny Acorns) are complete.

The second caper requires you to pickpocket various NPCs for Flame fragments, pieces of solidified fire that they found after a magician had a serious mishap and blew herself up. 32 fragments need to be gathered and they are scattered in various places, no more than 6 in one place.

Walkthrough
After speaking to Darren, it's time to go fragment hunting! To hunt them, just simply pickpocket the target. There are seven categories of target, each of which can give up to six fragments.

Note: It is possible to skip doing one of the groups entirely (such as Rogues), since there are 7 groups for 32 fragments. Lumbridge farmers and Master farmers are counted as separate groups. Just pick 6 fragments from 5 different groups and 2 fragments from the 6th.
 * Farmers, who can be found throughout the farmland around Lumbridge.
 * Master Farmers, who can be found in Draynor Village.
 * Men and Women anywhere in runescape.
 * H.A.M. members in the H.A.M. Dungeon.
 * Guards anywhere in Runescape.
 * Rogues in the Rogues' Castle in the high Wilderness.
 * Al Kharid Warriors, although other kinds of pickpocketable warriors, such as Warrior Women works too.

Note: If you die, you will lose all of your fragments. Remember to bring food.

Strategy 1 (Ardougne teleport required):

 * Pickpocket men and women in Lumbridge for 6 fragments.


 * Run to the H.A.M. Hideout and pickpocket them for their 6.


 * Then, teleport to Ardougne and steal the 6 fragments from the guards in the market.


 * Run west to pickpocket the warrior women for their 6 (east from the castle, west from the market).


 * After this, exit Ardougne to the north near the farming shop and pickpocket the normal farmer for 6 fragments.


 * This makes 30 fragments; pickpocket the master farmer for the remaining two (2).

Strategy 2 (No teleports, lots of walking):

 * Start the same way as above: steal from men and women in Lumbridge first and then go to the H.A.M. hideout.


 * From there, head north to the road near Farmer Fred and follow it east to the field; pickpocket the normal farmer there.


 * Go to Draynor Market and steal from the master farmer there.


 * Next, head to Falador's southern entrance and pickpocket the guards there.


 * Now, return to Lumbridge to go to Al Kharid (those who haven't done Prince Ali Rescue need 10 coins to pass). Steal the last 2 fragments from the Al Kharid warriors in the palace.

Both this strategy and the one above don't require you to pickpocket rogues in the wilderness.

Finishing off
Successful pickpocketing attempts do not always gain fragments; the standard loot may be gained instead. Several attempts may be necessary to get one fragment. The same NPC can be pickpocketed repeatedly until all 6 fragments in the area are gained. A message in the chat box appears when the player gets a fragment. (The player is not told, however, if and when they have gain all the fragments in an area.) It is a simple process to right click any of the fragments you have obtained (or by talking to Robin in the guild) and choosing check, to see which of the NPC's are still available to be stolen from to obtain fragments. Once all 32 fragments are obtained, none more can be received from any NPC. Return the fragments to Darren, every 8 you return you will be prompted to claim a random reward from Robin. Repeat obtaining these rewards until you have completed the caper. Congratulations, miniquest complete!

Reward

 * 46-49 Coal
 * 126-136 Teak logs
 * 37 Raw lobsters
 * 38-46 Gold ore
 * 19 Raw swordfish
 * 43-55 Nature runes
 * 255 maple logs
 * 45 Law runes
 * Improved loot from pickpocketing NPCs up to level 40 Thieving
 * Access to Dodgy Derek's Dirty Deals store run by Dodgy Derek
 * Access to Wall safes
 * Guild expands with several more rooms and NPCs
 * 5,000 Thieving experience + 4800 Thieving experience for turning in the Flame Fragments

Note: All of these (except the runes) are noted.

The total monetary value of this reward is in the range of

-

Trivia

 * If you have a full inventory (even with any kind of Flame fragments in it) and you try to pickpocket any NPC that has fragments, you will not receive any.
 * Dying in a player-owned house will make you lose all your Flame fragments.