Track down Abby
Before leaving the boat, look to your left to find an Artefact 113/117, then work your way up the path ahead. Once you've climbed over the fence, go into the garage of the house on the right to find an Artefact 114/117 on the table, then continue going right some more and you'll come across a house with a wall you can climb over.
Take down the enemy on the roof, then climb up and enter the house. Here you'll want to go into the bedroom on the right first to find a Trading Card 47/48, then drop downstairs to find an Artefact 115/117 and a workbench in the kitchen.
Exit the house and crawl through the hole in the wall, then press [L3] near the police car to add an entry to your journal, now go down the hill and slide through the tight gap for a cutscene.