Testing one's detective ability with 能力
Kanji Explanation: Ability and capability with 能

Conan finds himself in the clutches of dangerous pair, only to discover it’s his parents in disguise.
- コナン:
- 「ハハ… それでオレが薬で小
( さくされた事情( を阿笠( 博士( に聞( いて、こんな悪巧( みを仕組( んだってわけか…」- “So you heard from Dr. Agasa about how I was shrunk by a drug and cooked up this evil scheme, huh...”
- 父
( さん: - 「悪巧
( みじゃないさ! おまえの探偵( としての能力( を試( してんだよ…」- “It's not an evil scheme! I'm just testing your abilities as a detective...”
Key Points
能力
( = ability or capacityHere 能力
( means Conan’s capability as a detective.It refers to overall ability, broader than one specific skill.
探偵
( としての能力( means ability in the role of a detectiveとしての frames the standard or role being judged.
The father is specifically testing Conan’s competence as a detective, not as a child or son.
試
( してんだよ is casual explanatory speech試
( してんだ is a contraction of 試( しているんだ.It gives the line a relaxed but explanatory tone: “I’m testing you, that’s all.”