This one's a bit unusual as RivkaT wants you to read the opening scene before you get to read the summary. The only hint before reading is "It's not what you think. At least, I hope not."
Trust me, it's worth reading the first scene to get to the summary.
RivkaT starts this one with our agents hot and heavy. It does get progressively more angsty as they find themselves in a dangerous predicament. An excellent fic. There are some mild dubcon elements if you overthink it, so try not to overthink it.