Legal Services Case Study: Curiosity gap hooks drove 4.4x ROAS
Ana
Creative Director · Orange Line
4.4x
Blended ROAS
$53
CPA
1.41%
Hook CTR
$61k
Spend tested
58%
3-sec view rate
MOF retargeting
Funnel stage
Across 67 creatives in the legal services account, curiosity gap angles were the clear winner this cycle. An incomplete loop in the first 3 seconds ('The reason your last 3 didn't work isn't what you think') held attention long enough to earn the pitch. We rotated 4 hook families against MOF retargeting and logged what actually moved CPA.
The setup
This account sits in Legal Services. Going in, the brand was over-reliant on one fatigued angle and CPA had crept to $53 on MOF retargeting. We structured a 3-cell test isolating the hook variable: same offer, same landing page, same audience — only the first 3 seconds changed. Budget was held flat at $61k so the read was clean.
Hook angle: Curiosity gap
An incomplete loop in the first 3 seconds ('The reason your last 3 didn't work isn't what you think') held attention long enough to earn the pitch. Pairing it with a fast cut kept thumb-stop rate high. In this legal services account it returned a 4.7x ROAS at a 3.28% hook CTR. This was our top performer and is now the control we test everything else against.
Hook angle: Before & after
Visual transformation in the first frame did the heavy lifting. Real, slightly-imperfect afters out-pulled glossy ones — believability beat aspiration. In this legal services account it returned a 5.1x ROAS at a 3.34% hook CTR. Solid mid-pack — worth keeping in rotation to fight fatigue on the winner.
Hook angle: Problem-led
Opening on the visceral pain point ('Still scrubbing burnt pans by hand?') consistently beat feature-first openers. The problem statement did the qualifying for us — only the right buyer self-identified. In this legal services account it returned a 3.8x ROAS at a 1.22% hook CTR. Solid mid-pack — worth keeping in rotation to fight fatigue on the winner.
Hook angle: Us vs. them
Positioning against the incumbent category ('Why we ditched the subscription trap') gave the buyer a villain. Comparison framing raised consideration but needed a soft CTA. In this legal services account it returned a 3.2x ROAS at a 2.20% hook CTR. Solid mid-pack — worth keeping in rotation to fight fatigue on the winner.
What actually moved the needle
The winning curiosity gap concept cut CPA to $53 and pushed blended ROAS to 4.4x. The biggest lever was the first frame: curiosity gap openers earned a 58% 3-second view rate vs. the account average. Creative format mattered too — raw UGC out-pulled produced spots, and on-screen captions lifted hold rate by double digits.
What flopped
Generic benefit-led and over-produced brand spots underperformed on cold traffic — high impressions, weak CTR, expensive clicks. Anything that buried the hook past 5 seconds never recovered. Discounts-first messaging trained the audience to wait for sales and dented LTV.
Orange Line takeaways
1) For legal services, lead with curiosity gap — it qualifies the buyer in the first frame. 2) Hold the offer and page constant when testing hooks so the read stays clean. 3) Refresh the winner every 9 days before fatigue spikes CPA. 4) Keep before & after, problem-led, us vs. them in rotation as fatigue insurance. 5) Raw, captioned, mobile-first creative beats studio polish on cold MOF retargeting.