Gaia

 Then consider the crap blown on you shared with me. It will be a little less for you and I'm so new here I don't have any on my own, yet ;-)   Amen!

Michael only wants to obtain information suitable for his interests, and as:  1.- The only ones who know Michael are Lacey and Megumi. 2.- Megumi is known to be a gossiper (something any PI could easily realize) 3.- Lacey could have been a good source of information about Eva and Gideon to Michael (through Megumi's gossip at home) and a very discreet one. 4.- The blind date with Lacey doesn't work. Maybe Michael persuaded Lacey to be on a blind date with her flatmate thinking on keeping the primal source (Megumi), not as discreet as Lacey, but still good. 5.- Megumi kicks off Michael and then he starts to stalk her (not good to loose the source!) 6.- Eva has never seen Michael 7.- Megumi's "illness" is something Michael's related (raped, captive,...), threatened to inform him (Eva doesn't tell Megumi with who she spent the weekend -Brett or Gideon- when she asked, so she doesn't know) 8.- There's only one person who could be really interested in what Eva does, in order to harm Gideon  So, my thought:  Michael is Christopher Vidal Jr.