Locked bike Kidnapped!!!!

Today I woke up to Dominika asking me where I had parked her bicycle. She seemed sad but with a little suspicious hope in her voice, like when you would know that the answer to a doubtful question is all but not a happy one, yet you still ask in case a miracle shall occur, long after miracles ceased from being all together credible ( we can't say, however, that Santa does not exist even if in a few years his home in the pole will be less white if the global warming keeps fast at work). The last time Dominika rode her bicycle was on Sunday, today is wednesday and that means it has been 3 days since we both last seen it, and I personally securely locked it to the heating pipe . We usually park it and lock it on the staircase between the 2nd and 3rd floors of our building. So my positive answer was as suspicious as any hope we both might have had, and even though I was still half asleep, I knew that the so much loved, e-bay great deal, Dominika's light green and cute and girly bike with the installable basket in the front was not on the stair case, but had been stolen who knows when, by who knows who, in the period between Sunday afternoon and wednesday morning. This was a sad wake up call by all means, and both our hearts sank in the mourning of the bike, I naturally was mad and started an investigation silently in my head to catch the thief( or thieves) and bring them to justice( whatever that means). In Warsaw like many other places,many people ride bicycles, and like many other places many eager thieves can thrive, and happily cease unwatched bicycles. Yet,how the hell can 2 bicycles disappear from inside of the building, where only residents have the key to get in and out. I say 2 bikes because there was another bicycle stolen in that same period. This brings to my mind the Italian film "bicycle thief" , although in the film the theft is almost pardonable if you follow carefully the protagonist's journey, I can't help but wonder about the person who stole the 2 bikes here. Anyway, in a sense you can't help but lose trust in locks, security, and law, when a thief must be living with you. UNFORTUNATELY THERE ARE NO PHOTOS OF THE BIKE:(