Sherlock Holmes and the mysterious woman

The Start

It was mid day and me and Watson were enjoying a cup of tea when we got a call from the inspector, Lestrade. As we arrived I noticed we were at a bank. Lestrade showed us to the body and Watson started examining it. "It seems he has been shot" said Watson. I nodded in agreement and crouched over the body. I started searching the corpse and found his phone. Surprisingly it did not have a pass code and I quickly opened it and went to his camera role, it had pictures of the now dead man and a woman enjoying themselves. As i kept scrolling i saw more pictures of this woman, it appeared as if they were dating. She had short blonde hair, blue eyes and a dimple when she smiled. I closed the camera role assuming there was nothing important and went into his messages, I scrolled through his messages and noticed there was an unknown person, I opened the messages and started reading them. There were only 4 messages but they were enough, They said:

{Wheres my money?}    

                                                                                               {I don't have it yet}

{I said get me the money by Tuesday or else}

                                       {Please, I can get it tomorrow just give me time}

I finished reading the texts and put the phone into my pocket. "Could you direct me to the man who found the body" i asked Lestrade as I got up and turned to him. Lestrade said yes and gestured to a man who looked a bit scared. As i arrived to the man I looked him up and down then noticed he was very nervous as he was fidgeting with his hands in a manor different from others. I approached him and asked him who he was. "My name is George Cooper." the man said nervously. I could sense his fear of being near all the officers. "Are you nervous Mr.Cooper?" I ask as I am interested in his answer. "It's not every day there's a body on the steps of my bank...Do you think this will ruin my workplace..Oh I hope not.." He said, he was clearly unsure about all of this. I nod and assure this will not ruin his job, "Where were you last night Mr Cooper?" I ask, hoping to get more information about him. "Here, I was working late.." He said as he looked around nervously. I raise my eyebrow and the man notices. "I had a loan to sign that was for a substantial amount." he says trying to get the suspicion away from him. "How much money" i ask clearly unsure about this loan. "A million pounds" he says after taking a small break to think. My brain immediately went to the text message. Could this be a connection? "Would this person by any chance look like this?" I say as I show him a picture of the man who is now dead. "Yes, that's him" he says after looking at the photo. I am correct, I have to be, but who is this Unknown person? I thank the man for his help and tell him to contact me if he has anything else that might be important. Then I quickly get back to Watson who is now talking with Lestrade. I stand next to Watson and glance at him hoping he will notice that I want to talk to him alone. Watson glances at me and then tells Lestrade that we should be going, we walked away and now I felt safe to tell Watson my theory. "Watson, I think I know what happened." I said with a hint of excitement. Watson looked interested as we stopped and he called a cab. We got into the cab and Watson told the driver to go to 221B baker. "The man who died got mysterious text messages from an unknown person" I say "He owed this person apparently a large sum of money" Watson looked at me, "Do you know how much?" he asked me. I grinned excitedly. "One million pounds". Watson looks surprised as if he doesn't know what to say. "And," I say as I pull out the man's phone "I have the messages and phone to decipher" I smirked looking at Watson who seems impressed. Then the phone dinged, it was a message. A message from the man who died's phone. I looked at the phone in surprise, then I check to see who messaged assuming it was a family member or the girl I saw in the photos. "No" I muttered to myself. The message said:

                                                     {Hello Mr.Holmes}