Weird Multiway Spot with an Overpair

[Double Eagle]

This is the very last hand from my session this morning. BB is Gohanounet, who I have at 17/12/2.8 over a couple thousand hands. I should have a pretty solid image with him. Shortstack is a 45/10 fish. BB's 3 bet range here should be very very narrow. When he bets smallish on the flop into two others including a shortstack who's committed with any piece I almost fold. Needless to say I'm confused about what to do on the turn, basically not sure if he realizes how strong I think his range is here and is waiting for me to value stack myself, or is he really giving up with AK? Also, open to feedback on other streets...

Poker Stars, $2/$4 NL Hold'em Cash Game, 6 Players
LegoPoker Hand History Converter

CO: $455.95
BTN: $515.05
SB: $113.95
BB: $400
Hero (UTG): $464.40
MP: $150.20

Pre-Flop: Q[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/club.gif[/img] dealt to Hero (UTG)
<font color="red">Hero raises to $16</font>, MP calls $16, 3 folds, <font color="red">BB raises to $60</font>, Hero calls $44, MP calls $44

Flop: ($182) 2[img]/images/graemlins/diamond.gif[/img] 3[img]/images/graemlins/club.gif[/img] T[img]/images/graemlins/spade.gif[/img] (3 Players)
<font color="red">BB bets $100</font>, Hero calls $100, MP calls $90.20 and is All-In

Turn: ($472.20) 9[img]/images/graemlins/spade.gif[/img] (3 Players - 1 is All-In)
BB checks, Hero scratches his head and ???