How to say "暗中查询信使的下落" (àn zhōng chá xún xìn shǐ de xià luò) in Chinese dialogue

ànzhōngcháxúnxìnshǐ使dexiàluò

secretly inquiring about the courier's whereabouts.

Grammar Patterns
INTERACTIVE SCRIPT TIMELINE
LINE 0105:56
yīng
gāi
zài
dǎo
shàng
zǒu
qīn
fǎng访
yǒu

should also visit relatives and friends on the island,

LINE 0205:59
PLAYING SCENE
àn
zhōng
chá
xún
xìn
shǐ使
de
xià
luò

secretly inquiring about the courier's whereabouts.

LINE 0306:02
dàn
zuó
tiān
rán
mào
chū
de
shào
bīng

But the sentry who appeared suddenly last night

Show Information
Source MediaTV Series
Season & EpisodeS1 E10
Timestamp05:59
TMDB ID309609