diff --git a/Find_duplicates_in_an_array/code.py b/Find_duplicates_in_an_array/code.py
new file mode 100644
index 0000000..96771d9
--- /dev/null
+++ b/Find_duplicates_in_an_array/code.py
@@ -0,0 +1,15 @@
+class Solution(object):
+    def duplicates_In_Array(self, nums):
+
+        history = {}
+        duplicate_set = set()
+
+        for number in nums:
+            if number in history:
+                duplicate_set.add(number)
+            else:
+                history[number] = 1
+
+        duplicate_array = sorted(duplicate_set)
+
+        return duplicate_array if duplicate_array else -1