Obtained by finding the Codex entry: Parson's Battered Notebook in Peacewood next to a corpse on a hill, where the river meets Veridium Mine at the southeast end of the river.
The codex itself outlines the steps required in order to complete the treasure hunt. The walkthrough outlines each step for each clue.
1. The first clue is marked at the top of Parson's Notebook and points to #12 in the subsequent list: "Beyond Andraste's Mercy, a hundred steps to revelation."
2. Andraste's Mercy is a landmark in the Emerald Graves northwest of the codex, marked with an "X". The next clue is found by searching southwest of the "X", between the segment of outer wall of Villa Maurel and a large tree. (Look northwest from the villa's corner as indicated on the map.)
Another way to locate it is to follow the path near Andraste's Mercy to the north/northwest. There, you will pass a segment of fencing alongside the path with two, small statues on either end of it. From the end of this fencing, as you were traveling, the clue is located at the base of the first tree on the left.
This will give you the second clue which points to #3 on the list: "Arching above outstretched wings. Even stone can rise."
3. Follow the road from Andraste's Mercy northwest towards The Lion's Pavilion. You will come to a place where the road passes through a gap in the rocks with a statue of an owl to the right of the entrance. This is northwest of the Silver Falls landmark on the map.
Climb up these overhanging rocks to reveal a search that will give you the next clue, pointing to #9 on the list: "Dragonslayers, four at the northwest, two from the northeast, three from the southeast."
4. This is a reference to the statue inside the Lion's Pavilion. Keep on the road until you reach the structure.
At this point, the clue can be misleading. Where it says "northwest", it isn't referring to the compass direction on the map. Instead, face the statue inside the pavilion and use the back wall as "north".
Then, light the torches in accordance with the codex—northwest torch four times, northeast torch twice and southeast torch three times. If done correctly all four torches and the central brazier will light up revealing the next clue which is #20 on the list: "At the first breath of sighs."
5. Head directly north from the Pavilion to an area called Rush of Sighs and the river. Follow this river northwest until you reach a waterfall.
If you are following only the final three steps, note that there are two approachable waterfalls on the river in the Graves. The one in question is not Silver Falls (marked by a Silver Falls landmark nearby) but the waterfall north of Gracevine Camp or in the same direction from the quest marker for A Lover's Promise if it has been obtained/not completely. The two rifts for Rifts at the Reach are also on either side of the location on the map.
A search here will reveal that the last clue is #14: "An upward pointing finger, there your heart lies."
- Unlike most codices, picking up the notebook does not grant any XP.
- The Misshapen Child's Doll is not a loot item and never appears in the inventory.