(I don't know why my screenshots are links sorry this is my first guide)

First you have to take a picture in the bedroom just. Look at the closet and take a picture.

https://steamuserimages-a.akamaihd.net/ugc/1863940661554364949/FBC8B1DF2F3C4CA837F4239F8FF20182D126B563/?imw=256&&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false

https://steamuserimages-a.akamaihd.net/ugc/1863940661554373366/E40C6E0F071BDA3222ABDF4E45AE57DEC842001C/?imw=256&&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false

Now get out of the bedroom and out of the pool table room, go to the right and you should see stairs with a Door above and take a picture.

https://steamuserimages-a.akamaihd.net/ugc/1863940661554380913/DDD20F2336ADDEFD81393413C7F668C9F65CBCEA/?imw=256&&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false

https://steamuserimages-a.akamaihd.net/ugc/1863940661554381753/0623E826C519CF88F31B1B3DB5E272AA9BCFFC17/?imw=256&&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false

The last picture you have to take is under the stairs in the living room.

https://steamuserimages-a.akamaihd.net/ugc/1863940661554386472/1634267A5C567D04E1B28514CA6A97BFAFA3FFA2/?imw=256&&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false

https://steamuserimages-a.akamaihd.net/ugc/1863940661554387207/27BDC1F31740BDA603D861454B42BCB5638652D8/?imw=256&&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false