Check or bet (and bluff) here?

Villain is TAG, conservative, will continuation bet.

***** Hand History for Game 2427958710 *****
$400 NL Texas Hold'em - Tuesday, July 26, 16:12:25 EDT 2005
Table Table 48773 (6 max) (Real Money)
Seat 3 is the button
Total number of players : 5
Seat 1: Rockinsky ( $618.60 )
Seat 2: texasgodd ( $466 )
Seat 3: Capt_Mo_Man ( $518.75 )
Seat 4: EvilEcstasy_ ( $146 )
Seat 6: RavenQ ( $519.10 )
EvilEcstasy_ posts small blind [$2].
RavenQ posts big blind [$4].
** Dealing down cards **
Dealt to EvilEcstasy_ [ Qd Ah ]
Rockinsky folds.
texasgodd folds.
Capt_Mo_Man raises [$15].
EvilEcstasy_ calls [$13].
RavenQ folds.
>You have options at Table 40492 (6 max) Table!.
** Dealing Flop ** [ 3c, 5h, 7h ]
>You have options at Table 54912 (6 max) (No DP) Table!.
jfalstaff has joined the table.
EvilEcstasy_ checks.
Capt_Mo_Man bets [$16].
EvilEcstasy_ calls [$16].
** Dealing Turn ** [ Ks ]
EvilEcstasy_ checks.
Capt_Mo_Man checks.
** Dealing River ** [ 8h ]
EvilEcstasy_ ???