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Description
Deep Dark BlueBy: Seraina Kobler A highly intriguing debut The Times (Crime Book of the Month) Highly recommended . . . Elegantly written and set in an unfamiliar but lovely city brought to vivid life Irish Independent An atmospheric, contemorary police procedural set on Lake Zurich, introducing intelligent and warm hearted detective Rosa Zambrano and perfect for fans of Donna Leon Available in English for the first time, and perfect for fans of Ann Cleeves, Sarah
By: Seraina Kobler“A highly intriguing debut” – The Times (Crime Book of the Month)
“Highly recommended . . . Elegantly written and set in an unfamiliar but lovely city brought to vivid life” – Irish Independent
An atmospheric, contemorary police procedural set on Lake Zurich, introducing intelligent and warm-hearted detective Rosa Zambrano and perfect for fans of Donna Leon
Available in English for the first time, and perfect for fans of Ann Cleeves, Sarah Pearse, and Donna Leon, this expertly plotted police procedural spent several months on the Swiss bestseller lists, garnering widespread critical acclaim as a gripping crime novel that still makes a holiday in Zurich sound like fun.
Water washes away everything, even the bodies.
Lake Zurich is Rosa Zambrano’s beat. Once a detective with the Criminal Investigation Department, she’s now exchanged serious crimes for the serenity of the water, patrolling it daily as the first female officer in Zurich’s maritime police force.
Then one day, the body of Dr Jansen, a renowned fertility doctor and successful biotech entrepreneur, is dredged up in a fisherman’s nets.
The case hits close to home for Rosa – she was a patient of Jansen’s and saw him only days before he was killed. The investigation leads her from the opulent villas on the lake’s shores to genetic research labs and a thriving escort service on the outskirts of the city – and to four women, each of whom has rejected the hand she’s been dealt.
With a uniquely captivating European setting and refreshingly modern female protagonist, Deep Dark Blue is the first in a new crime series starring the intelligent and warm-hearted investigator Rosa Zambrano.
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4.3 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Good fun and entertaining!
Color: Orange
A really fun interactive toy for your dog! It's pretty erratic and really gets him chasing it. The included soft cover was kinda hard to install and then it's hard to turn it off and on with the cover on, I feel like the cover didn't really improve it at all, sure it's louder without the cover but I feel like dog also likes it that way, he likes loud squeaky toys and this thing making a bunch of noise is appealing to him. We have mostly hardwood floors so it really gets moving, I'm sure on carpet it would be a bit quieter and maybe even a bit slower to move around but on hard smooth surfaces this things can really get zipping around abd get some speed to make him chase it. Overall a fun and entertaining toy.
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Reviewed in the United States on January 27, 2026
★★★★★ 5
Awesome
Color: Orange
Awesome Toy . My Jack is crazy over it. She usually get bored with others, but this toy still has her attention after a couple of weeks Runs a long time on a short charge. 👍🏻
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Reviewed in the United States on May 30, 2026
★★★★★ 2
Not the Fetch-Fest I Hoped For
Color: Orange
I had high hopes for the PetDroid Interactive Dog Ball, especially with the newly upgraded features and promises of durable, motion-activated fun. Unfortunately, it didn’t quite live up to expectations for my furry friend. Here’s why I’m giving it 2 stars.
Promising Features, Lackluster Results
The idea behind this toy is fantastic: a durable, motion-activated ball that would entertain my dog without much effort on my part. The ball is supposed to roll around on its own, keeping my dog engaged and active. However, in practice, it just didn’t capture my dog’s interest.
Durability
I will give credit where it’s due: the ball is well-made and seems durable. It can withstand some rough handling, which is great for more aggressive chewers. Unfortunately, durability doesn’t mean much if your dog won’t play with it in the first place.
Motion Activation
The motion activation feature is hit or miss. While the ball does move around as advertised, it didn’t seem to move in a way that intrigued my dog. He gave it a sniff, watched it for a minute, and then walked away, unimpressed. I tried multiple times to get him interested, but he simply wasn’t having it.
Lack of Engagement
The biggest issue is that the ball just didn’t engage my dog at all. It might be more suitable for a different personality type or breed, but for my pooch, it was a total flop. He’s usually quite playful and curious, so I was surprised by his lack of interest.
Final Thoughts
Overall, the PetDroid Interactive Dog Ball might work for some dogs, but it was a miss for mine. If your dog is easily entertained by automated toys, it might be worth a try. However, based on my experience, I can’t wholeheartedly recommend it.
Pros:
Durable construction
Motion-activated as advertised
Cons:
Did not engage my dog
Motion activation wasn’t intriguing enough
Might be more suitable for specific dog types or personalities
If you decide to give it a shot, just be prepared for the possibility that your dog might not find it as entertaining as you hope. For us, it’s back to the drawing board for a more engaging toy.
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Reviewed in the United States on June 14, 2024
★★★★★ 4
Pup Loves It, Some Other Notes
Color: Orange
We've had this for about six months and my 75 lb, 14-month-old German Shepherd pup LOVES IT. Her favorite is "Crazy Bouncing Mode." In fact, she doesn't care much for the normal mode. She chews it a lot - even drops it in her water bowl at times - and it's still going strong.
This is a great purchase. It's nice hands-off entertainment.
Do know that it is heavy compared to a normal ball - if your pup likes dropping it on the ground like mine does, it will land with a hard "thud," even with the included sleeve. Hopefully you don't have downstairs neighbors.
Also know that the cover that goes over the charging port is removable and your dog may choke on it if they chew it in just the right manner. Definitely only let the pup play with it while supervised.
All in all, great toy.
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Reviewed in the United States on February 11, 2026
★★★★★ 5
Bouncy, not hard, and good value.
Style: Fetch Balls (Pack of 10), Size: 2.5 inch
Great balls for the ball launcher and not rockhard like some of the solid rubber balls. These have great bounce, and because of the two holes, they make a fun whistling noise as they fly through the air. My dogs love them and they are a good value.
By the way, if you throw them too hard, they will go through chain-link and no climb fence because they squish a bit!
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Reviewed in the United States on February 16, 2026
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