Location: This mission becomes available after you complete the Seeking the Truth side mission. Wait for an e-mail from Marnie and access it to click on the link contained in the message. Thanks to this, you will visit the www.epsilonprogam.com site again. Select the option of donating $500 for the needs of the cult(the above screenshot).
You now need to wait patiently until there appears the cult symbol in the North-Eastern part of the map (letter E on the world map). It is the Downtown Vinewood district. More precisely, it is the small building neighboring the Pitchers club, among others, i.e. one of the purchase-able estates. Enter the building and watch a cutscene of your meeting with Marnie and several more cultists.
Rewards for the completion of the mission:
- New contact on Michael's contacts list: Marnie
Requirements for the completion of the mission in 100%: There are no additional requirements for this mission so, it gets completed in 100% automatically.