He said, You have to believe me. I never met for it to happen. He was right in front of me. I didn't mean to kill him. I'm so sorry.
Like Marisol, I was thinking... WHAT?! However, I also couldn't help but think the "he" in Nick's confession could still likely be Barrett Powell.
The new Mrs. Deering was obviously very distraught and wanted to get to the bottom of what Nick said, even if he denied every word being truthful. She eventually realized that Opal was blackmailing him all along and left her ring behind when she felt like he wasn't honest.
On Devious Maids Season 2 Episode 9, Ethan was stabbed by Carmen and got away but was bleeding like crazy. Valentina called Remi, the only person she could trust and who could help.